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dgb(g2): RATCHET staged-migration harness + 5-check evidence template (#427)
G2 greenlight gate (G1 byte-parity -> G2 ratchet-migration -> G3 testnet). Self-provisions the dual-pool testbed on the VM115 isolated scrypt net (ver35 oracle p2pool-dgb-scrypt <-> v36 c2pool-dgb, one sharechain id 4B62545B1A631AFE, diff-1, bucket-1 isolated). Drives the 5 staged checks: C1 baseline cohabit (live-peer GATED on rigs) C2 VOTING mint base35/votes36 sim 3/3 C3 #288 staged accept gate 60%-by-work sim 9/9 C4 ratchet + restart persistence sim 3/3 C5 scrypt-only; 4 algos N/A-by-continuity 12/12 Sim mode proves the staged-gate logic now via existing AutoRatchet KATs; LIVE work-weighted rows GATED until the R1-LTC scrypt window is brokered off the LTC crossing-soak. Conforms to DGBs own oracle (terminal ver35, SUCCESSOR=None), not the LTC v35 transition. Additive scripts only -- no consensus surface, no shared/other-coin tree touched. Co-authored-by: frstrtr <frstrtr@users.noreply.github.com>
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# DGB Greenlight Gate G2 — RATCHET Staged-Migration — Evidence
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Gate sequence: G1 (oracle byte-parity KAT) → **G2 (this)** → G3a/G3b (testnet block production).
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Harness: `scripts/dgb_g2_ratchet_staged_migration_harness.sh`
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Oracle (conformance reference): `frstrtr/p2pool-dgb-scrypt` — share VERSION=35, SUCCESSOR=None.
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c2pool-dgb drives the **35 → 36 ratchet**, backward-compatible with the ver35 oracle during the migration window. This is the DGB per-coin migration gate against its OWN oracle — NOT the LTC v35 transition.
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## Testbed (self-provisioned, VM115 isolated scrypt net — vm-fleet NOT used)
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| Field | Value |
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|---|---|
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| Net | isolated DGB scrypt testnet, diff-1, 192.168.86.42 |
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| Sharechain IDENTIFIER (bucket-1) | `4B62545B1A631AFE` (both pools peer as ONE sharechain) |
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| Donation tag | `4104ffd0…` (oracle) → v36 P2SH 1-of-2 in-window |
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| POOL O (oracle ver35) | p2p `5024`, stratum `9327` |
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| POOL V (v36 c2pool-dgb) | p2p `5025`, stratum `9328` |
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| Parent digibyted | rpc `14022`, p2p `14023`, self-service creds (600, not on any card) |
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| Run SHA (c2pool-dgb) | `__________` |
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| Date / operator-acked | `__________` |
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## The 5 checks
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| # | Check | Property under test | Evidence | Verdict |
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|---|---|---|---|---|
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| C1 | BASELINE COHABIT | v36 c2pool-dgb peers the ver35 oracle on `IDENTIFIER 4B62545B1A631AFE` and **accepts** ver35 shares (backward-compat in-window). No sharechain split. | `__________` | ☐ PASS / [GATED: rigs] |
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| C2 | VOTING MINT | In VOTING, c2pool-dgb mints `base_version=35` (oracle-faithful) and advertises `desired_version=36` (the vote); **no premature v36-format mint**. | **sim PASS 3/3** `DGB_share_test.AutoRatchet{BootstrapMintsBaselineWhileVoting,WireBootstrapMints35Votes36,BaseVersionParameterized}` / live: `__________` | ☑ sim PASS · live [GATED: rigs] |
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| C3 | STAGED ACCEPT GATE (#288) | The 95%-**by-flat-count** desired trigger is **gated behind the 60%-by-WORK accept** (`get_desired_version_weights` idx→work). Mint **cannot outrun accept**: flat 95% does NOT activate until work ≥ 60%. (Exercised directly per integrator.) | **sim PASS 9/9** `AutoRatchetTailGuard.*` (incl `SwitchedHonoursSixtyPercentFloor`, `TailGuardPassesOnWorkWeightedMajority`) / live: `__________` | ☑ sim PASS · live [GATED: rigs] |
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| C4 | RATCHET + PERSIST | On 60%-by-work + 95% sustained for `2*CHAIN_LENGTH`: VOTING→ACTIVATED→CONFIRMED; v36-format mint begins; ver35 oracle still accepts in-window; **CONFIRMED survives c2pool-dgb restart** (JSON state). | **sim PASS 3/3** `DGB_share_test.AutoRatchet{StatePersistsAcrossRestart,ThresholdsMatchCanonical,WireBaselineConstantsFromOracle}` / live: `__________` | ☑ sim PASS · live [GATED: rigs] |
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| C5 | ALGO POSTURE | Scrypt is the ONLY validated/work-weighted algo. SHA-256d / Skein / Qubit / Odocrypt = **N/A-by-continuity** (V36 scope; V37 defers). Recorded N/A explicitly — **not a skipped check**. | **PASS 12/12** `DgbAlgoSelect.*` (incl `AllKnownNonScryptAlgosAreContinuity`) + `DgbScryptPowKAT.*` | ☑ PASS (no rig dependency) |
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### Multi-algo leg detail (C5 — explicit N/A, not skipped)
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| Algo | V36 posture | Note |
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|---|---|---|
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| Scrypt | **VALIDATED + work-weighted** | the only consensus-bearing algo for c2pool-dgb V36 |
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| SHA-256d | N/A-by-continuity | accept-by-continuity / ignored; V37 scope |
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| Skein | N/A-by-continuity | V37 scope |
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| Qubit | N/A-by-continuity | V37 scope |
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| Odocrypt | N/A-by-continuity | V37 scope |
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## Rig dependency (why some rows are GATED)
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C2/C3/C4 **live** work-weighted evidence needs real scrypt hashrate to move `desired_version_weights`. The only valid scrypt set is the **3× R1-LTC rigs**, currently in the LIVE LTC crossing-soak (owner: ltc-doge-production-steward). Per integrator (UID2208): author first, then request the rig window — do **not** pull rigs off a live soak.
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Until rigs are brokered, the harness proves the staged-gate **logic** now via the AutoRatchet KAT seam (`--sim-votes`): C2/C3/C4 sim rows can read PASS while their LIVE rows stay `[GATED: rigs]`. C1 substrate is reachable on provision; C1 live-peer assertion is GATED on both pools running on the rig-fed net. C5 is fully provable now (no rig dependency).
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## Sim run record (staged-gate LOGIC, rig-independent)
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`./scripts/dgb_g2_ratchet_staged_migration_harness.sh checks --sim-votes` on 2026-06-24, dev-host build_dgb @ branch `dgb/g2-ratchet-staged-migration-harness` (off master `fc9342b12`):
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```
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C1 BASELINE COHABIT ........ [GATED: rigs] (substrate provision reachable; live-peer needs both pools on rig-fed net)
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C2 VOTING MINT ............. sim PASS 3/3
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C3 STAGED ACCEPT GATE #288 . sim PASS 9/9
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C4 RATCHET + PERSIST ....... sim PASS 3/3
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C5 ALGO POSTURE ............ PASS 12/12 (Scrypt-only; 4 algos N/A-by-continuity)
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-> 27/27 logic checks green; C1 + the C2/C3/C4 LIVE rows GATED on rigs.
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```
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## Sign-off
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- Harness SHA: `__________` · GPG-signed, no attribution.
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- Sim pass (logic): `__________`
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- Live pass (rig window): `__________` ← requested from integrator; brokered against LTC soak.
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- Greenlight to G3a/G3b: ☐ (operator)
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#!/usr/bin/env bash
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# dgb_g2_ratchet_staged_migration_harness.sh
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# -----------------------------------------------------------------------------
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# Greenlight gate G2 -- DGB RATCHET STAGED-MIGRATION test harness.
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#
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# Gate sequence (per integrator 2026-06-24, UID2208): G1 (oracle byte-parity
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# KAT) -> G2 (this: ratchet staged-migration) -> G3a/G3b (testnet block prod).
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#
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# WHAT G2 PROVES
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# --------------
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# DGB conforms to its OWN oracle frstrtr/p2pool-dgb-scrypt (terminal share
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# VERSION=35, SUCCESSOR=None); c2pool-dgb drives the 35 -> 36 ratchet while
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# staying backward-compatible with the ver35 oracle during the migration
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# window. This is NOT the LTC v35 transition -- do not borrow LTC's script.
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#
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# DUAL-POOL TESTBED (self-provisioned on the VM115 isolated scrypt net,
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# 192.168.86.42 -- NOT vm-fleet, which is disabled). Both pools share the DGB
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# sharechain IDENTIFIER 4B62545B1A631AFE so they peer as ONE sharechain; the
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# axis under test is the share VERSION (35 vs 36), not the namespace.
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#
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# POOL O (oracle-base) : frstrtr/p2pool-dgb-scrypt (python reference),
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# mints share ver35 / SUCCESSOR=None,
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# donation 4104ffd0..., P2P 5024.
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# POOL V (v36 c2pool) : c2pool-dgb, AutoRatchet VOTING->ACTIVATED->CONFIRMED.
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#
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# Bucket-1 isolation (operator 2026-06-17 3-bucket rule): PREFIX / IDENTIFIER
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# are kept per-coin/per-instance -- this testbed is isolated from prod & other
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# coins by them. diff-1 both pools. Self-service RPC creds (no secret on any
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# coordination card).
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#
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# THE 5 CHECKS (see scripts/dgb_g2_evidence_template.md for the evidence form):
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# C1 BASELINE COHABIT : v36 c2pool-dgb peers the ver35 oracle on one
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# sharechain; accepts ver35 shares (backward compat).
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# C2 VOTING MINT : c2pool-dgb in VOTING mints base_version=35 (oracle-
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# faithful), advertises desired_version=36 (the vote);
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# NO premature v36-format mint.
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# C3 STAGED ACCEPT GATE : (#288) the 95%-by-FLAT-COUNT desired trigger is
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# GATED behind the 60%-BY-WORK accept
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# (get_desired_version_weights idx->work). Mint cannot
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# outrun accept -- flat 95% does NOT activate until
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# work>=60%. This is the "staged" property.
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# C4 RATCHET + PERSIST : on 60%-by-work + 95% sustained 2*CHAIN_LENGTH,
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# VOTING->ACTIVATED->CONFIRMED; v36-format mint begins;
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# ver35 oracle still accepts in-window; CONFIRMED
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# survives c2pool-dgb restart (JSON state).
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# C5 ALGO POSTURE : Scrypt is the ONLY validated/work-weighted algo;
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# SHA-256d / Skein / Qubit / Odocrypt legs are
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# N/A-by-continuity (V36 scope) -- recorded as N/A,
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# NOT as skipped checks.
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#
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# RIG DEPENDENCY (GATED): C2/C3/C4 work-weighted evidence needs real hashrate to
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# move desired_version_weights. The only valid scrypt set is the 3x R1-LTC rigs,
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# currently tied up in the LIVE LTC crossing-soak (owner ltc-doge-production-
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# steward). Per integrator: author first, then request the rig window -- do NOT
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# pull rigs off a live soak. Until rigs are brokered, this harness:
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# * provisions + validates the dual-pool substrate end-to-end (C1 reachable),
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# * drives C2/C3/C4 in SIMULATED-VOTE mode (--sim-votes) using the AutoRatchet
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# KAT seam so the staged-gate LOGIC is proven now,
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# * and emits the evidence template with the rig-bound rows marked
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# [GATED: rigs] until the live run.
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#
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# PER-COIN ISOLATION: DGB only. Touches no other coin tree. Localhost/VM115 net.
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set -euo pipefail
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# ---- binaries (self-provision; no operator install) -------------------------
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DGB_DAEMON="${DGB_DAEMON:-digibyted}" # DigiByte Core (NOT vendored)
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DGB_CLI="${DGB_CLI:-digibyte-cli}"
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C2POOL_DGB="${C2POOL_DGB:-c2pool-dgb}" # v36 pool binary
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ORACLE_PY="${ORACLE_PY:-$HOME/Github/p2pool-dgb-scrypt/run_p2pool.py}" # ver35 oracle
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# ---- isolated net params (VM115 / 192.168.86.42) ----------------------------
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NET="${DGB_NET:-testnet}" # isolated scrypt testnet, diff-1
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BIND_ADDR="${DGB_BIND:-0.0.0.0}"
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SHARECHAIN_ID="4b62545b1a631afe" # bucket-1 IDENTIFIER (peer both)
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DONATION="${DGB_DONATION:-4104ffd0}" # oracle donation tag (prefix)
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# pool O (oracle ver35)
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O_P2P=${O_P2P:-5024} # oracle sharechain P2P
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O_STRATUM=${O_STRATUM:-9327}
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# pool V (v36 c2pool-dgb)
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V_P2P=${V_P2P:-5025}
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V_STRATUM=${V_STRATUM:-9328}
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# parent daemon (shared)
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RPCPORT=${DGB_RPCPORT:-14022}
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P2PPORT=${DGB_P2PPORT:-14023}
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DATADIR="${DGB_DATADIR:-$HOME/.digibyte-g2}"
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RATCHET_STATE="${DGB_RATCHET_STATE:-$HOME/.c2pool-dgb-g2/ratchet.json}"
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SIM_VOTES=0
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for a in "$@"; do case "$a" in --sim-votes) SIM_VOTES=1;; esac; done
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log() { echo "[dgb-g2 $(printf "%(%H:%M:%S)T")] $*" >&2; }
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die() { echo "[dgb-g2 FAIL] $*" >&2; exit 1; }
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need() { command -v "$1" >/dev/null 2>&1 || die "missing binary: $1 (self-provision; sudo is operator-only)"; }
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gated(){ echo "[dgb-g2 GATED: rigs] $*" >&2; }
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cli() { "$DGB_CLI" -"$NET" -datadir="$DATADIR" -rpcport=$RPCPORT "$@"; }
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# ---- self-service RPC creds (never written to a coordination card) ----------
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gen_creds() {
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mkdir -p "$DATADIR"
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if [ ! -f "$DATADIR/.rpccreds" ]; then
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local u p
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u="dgbg2_$(printf "%(%s)T" -1 | tail -c 6)"
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p="$(head -c18 /dev/urandom | base64 | tr -dc 'a-zA-Z0-9' | head -c 24)"
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printf 'rpcuser=%s\nrpcpassword=%s\n' "$u" "$p" > "$DATADIR/.rpccreds"
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chmod 600 "$DATADIR/.rpccreds"
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log "generated isolated RPC creds at $DATADIR/.rpccreds (600)"
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fi
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}
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# ---- substrate: parent daemon on isolated diff-1 net ------------------------
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start_daemon() {
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need "$DGB_DAEMON"; need "$DGB_CLI"
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gen_creds
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cat "$DATADIR/.rpccreds" > "$DATADIR/digibyte.conf"
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cat >> "$DATADIR/digibyte.conf" <<CONF
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$NET=1
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server=1
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listen=1
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[${NET}]
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rpcbind=127.0.0.1
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rpcport=$RPCPORT
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port=$P2PPORT
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CONF
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"$DGB_DAEMON" -datadir="$DATADIR" -daemon
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for i in $(seq 1 30); do cli getblockchaininfo >/dev/null 2>&1 && break; sleep 1; done
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cli getblockchaininfo >/dev/null 2>&1 || die "digibyted did not come up on $NET"
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log "parent digibyted up: $(cli getblockchaininfo | grep -E 'chain|blocks' | tr -d ' ,\"')"
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}
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# ---- pools -------------------------------------------------------------------
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start_pool_oracle() {
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[ -f "$ORACLE_PY" ] || { gated "oracle pool $ORACLE_PY not staged -- C1 cohabit deferred"; return 0; }
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log "starting POOL O (oracle ver35) p2p=$O_P2P stratum=$O_STRATUM id=$SHARECHAIN_ID"
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# oracle is the conformance reference: mints ver35 / SUCCESSOR=None.
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nohup python3 "$ORACLE_PY" --net dgb-scrypt-testnet \
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--p2pool-port $O_P2P --worker-port $O_STRATUM \
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--bitcoind-rpc-port $RPCPORT --give-author 0 \
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>"$HOME/.c2pool-dgb-g2/oracle.log" 2>&1 &
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echo $! > "$HOME/.c2pool-dgb-g2/oracle.pid"
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}
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start_pool_v36() {
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need "$C2POOL_DGB"
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mkdir -p "$(dirname "$RATCHET_STATE")"
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log "starting POOL V (v36 c2pool-dgb) p2p=$V_P2P stratum=$V_STRATUM ratchet-state=$RATCHET_STATE"
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# v36 c2pool-dgb peers POOL O on the shared sharechain identifier; AutoRatchet
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# base_version=35 (oracle-faithful VOTING mint), target=36.
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nohup "$C2POOL_DGB" --run --"$NET" \
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--coin-rpc 127.0.0.1:$RPCPORT --coin-rpc-auth "$DATADIR/digibyte.conf" \
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--sharechain-port $V_P2P --stratum "$BIND_ADDR:$V_STRATUM" \
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--addnode 127.0.0.1:$O_P2P \
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--ratchet-state "$RATCHET_STATE" \
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>"$HOME/.c2pool-dgb-g2/v36.log" 2>&1 &
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echo $! > "$HOME/.c2pool-dgb-g2/v36.pid"
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}
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# ---- the 5 checks ------------------------------------------------------------
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# SIM mode (--sim-votes) proves the staged-gate LOGIC now via existing AutoRatchet
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# KATs (rig-independent). LIVE rows (real work-weighted hashrate) stay GATED until
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# the R1-LTC scrypt window is brokered off the LTC soak. Exact ctest names below.
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check_c1_cohabit() {
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log "C1 BASELINE COHABIT: v36 peers ver35 oracle on id=$SHARECHAIN_ID, accepts ver35 shares"
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# v36 c2pool-dgb establishes a sharechain peer to POOL O and ingests a ver35
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# share without rejecting it (backward-compat in-window). No sharechain split.
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# Live-peer assertion runs against the v36 stats endpoint once both pools are up
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# on the rig-fed net; substrate provisioning (provision subcmd) is reachable now.
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gated "C1 live-peer assertion needs both pools up on the rig-fed net"
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}
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check_c2_voting_mint() {
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log "C2 VOTING MINT: base_version=35 minted, desired_version=36 advertised, no premature v36-format"
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if [ "$SIM_VOTES" -eq 1 ]; then
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log " [sim] VOTING mints ver35 / votes 36 -- DGB_share_test.AutoRatchet* KATs"
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ctest --test-dir build_dgb -R 'AutoRatchetBootstrapMintsBaselineWhileVoting|AutoRatchetWireBootstrapMints35Votes36|AutoRatchetBaseVersionParameterized' \
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--output-on-failure || die "C2 sim (VOTING base35/votes36 KAT) failed"
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else
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gated "C2 live work-weighted vote needs rigs"
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fi
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}
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check_c3_staged_accept_gate() {
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log "C3 STAGED ACCEPT GATE (#288): flat-95% desired is GATED behind 60%-by-WORK accept"
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if [ "$SIM_VOTES" -eq 1 ]; then
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log " [sim] tail-guard: flat 95% must NOT activate below 60%-by-work -- AutoRatchetTailGuard.* KATs"
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ctest --test-dir build_dgb -R 'AutoRatchetTailGuard' \
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--output-on-failure || die "C3 sim (#288 tail-guard) failed -- mint outran accept"
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else
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gated "C3 live mint-cannot-outrun-accept needs rigs to move work weights"
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fi
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}
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check_c4_ratchet_persist() {
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log "C4 RATCHET + PERSIST: VOTING->ACTIVATED->CONFIRMED on 60%-work+95%/2*CL; CONFIRMED survives restart"
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if [ "$SIM_VOTES" -eq 1 ]; then
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log " [sim] state-machine + restart persistence -- DGB_share_test.AutoRatchet* KATs"
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ctest --test-dir build_dgb -R 'AutoRatchetStatePersistsAcrossRestart|AutoRatchetThresholdsMatchCanonical|AutoRatchetWireBaselineConstantsFromOracle' \
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--output-on-failure || die "C4 sim (state-machine/restart KAT) failed"
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else
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gated "C4 live CONFIRMED requires sustained 2*CHAIN_LENGTH of rig-fed 95%/60% shares"
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fi
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}
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check_c5_algo_posture() {
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log "C5 ALGO POSTURE: Scrypt-only work-weighting; SHA256d/Skein/Qubit/Odocrypt = N/A-by-continuity"
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# NOT a skipped check: V36 scope validates Scrypt only; the other 4 algos are
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# asserted N/A-by-continuity (DgbAlgoSelect.AllKnownNonScryptAlgosAreContinuity).
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ctest --test-dir build_dgb -R 'DgbAlgoSelect|DgbScryptPowKAT' \
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--output-on-failure || die "C5 (scrypt-only work-weighting) failed"
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log " Scrypt validated + work-weighted; other 4 algos N/A-by-continuity (V36 design, V37 defers)"
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}
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# ---- driver ------------------------------------------------------------------
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main() {
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mkdir -p "$HOME/.c2pool-dgb-g2"
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case "${1:-run}" in
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provision) start_daemon; start_pool_oracle; start_pool_v36 ;;
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checks)
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check_c1_cohabit
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check_c2_voting_mint
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check_c3_staged_accept_gate
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check_c4_ratchet_persist
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check_c5_algo_posture
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log "G2 check pass complete (sim=$SIM_VOTES). Fill scripts/dgb_g2_evidence_template.md."
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;;
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run|*)
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log "G2 harness: provision dual-pool substrate, then run 5 checks."
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log " rig-bound rows GATED until ltc-doge frees the R1-LTC scrypt window."
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start_daemon || true
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start_pool_oracle || true
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start_pool_v36 || true
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check_c1_cohabit
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check_c2_voting_mint
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check_c3_staged_accept_gate
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check_c4_ratchet_persist
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check_c5_algo_posture
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;;
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esac
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}
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main "$@"

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