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btc(donation): clarify combined P2SH is intentional unified v36 target (FLAG6) #128

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Merged
frstrtr merged 1 commit into from
Jun 17, 2026
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btc(donation): clarify combined P2SH is intentional unified v36 target (FLAG6) #128

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20 changes: 13 additions & 7 deletions src/impl/btc/config_pool.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -118,13 +118,19 @@ class PoolConfig : protected core::Fileconfig
};

// V36+ COMBINED_DONATION_SCRIPT (P2SH: OP_HASH160 <hash160(redeem)> OP_EQUAL)
// 1-of-2 multisig: forrestv + frstrtr/c2pool dev key.
// LTC P2SH donation target. BTC now runs v36-active shares, but its
// donation leg intentionally stays the V35 P2PK above (forrestv
// canonical BTC-mainnet donation); this COMBINED P2SH is LTC-only,
// kept here as inert byte data so get_donation_script() compiles for
// both the BTC (P2PK) and LTC v36 (P2SH) paths.
// Address: MLhSmVQxMusLE3pjGFvp4unFckgjeD8LUA (LTC mainnet P2SH).
// 1-of-2 multisig redeem: forrestv + frstrtr/c2pool dev key.
//
// INTENTIONAL unified cross-coin v36 donation target. This is NOT inert and
// NOT LTC-only: BTC v36 coinbases deliberately pay this combined P2SH. The
// identical 20-byte hash160 (8c627262..8e85) is emitted by EVERY coin's v36
// gentx (btc/ltc/bch/dgb) via PoolConfig::get_donation_script(>=36). Per-coin
// baseline conformance (vs each coin's own p2pool source) still governs every
// OTHER consensus aspect; the v36 donation target is the one deliberate
// cross-coin exception (operator FLAG6 ruling 2026-06-17, option-b).
//
// The hash160 renders as MLhSmVQxMusLE3pjGFvp4unFckgjeD8LUA under the LTC
// mainnet P2SH prefix; the same hash160 is the shared target on all coins
// (only the base58 rendering differs per coin prefix, the redeem does not).
static constexpr std::array<uint8_t, 23> COMBINED_DONATION_SCRIPT = {
0xa9, // OP_HASH160
0x14, // PUSH 20 bytes
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