docs: backfill SIP-2 (Voyager), SIP-3 (Tokenomics v2), SIP-4 (Reward v2)#1
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Three landmark protocol changes that shipped on mainnet between 2026-04-25 and 2026-04-26 were documented in the chain repo's CLAUDE notes and audit memos but never made it into the SIP repo. Backfilling now so external implementers, auditors, and ecosystem partners have stable URLs to cite for the consensus rules that the live mainnet follows. * SIP-2: Voyager DPoS+BFT activation. Mainnet h=579047 (DPoS) / h=579060 (EVM), 2026-04-25. Pre-fork PoA round-robin replaced by stake-weighted BFT with revm 37 EVM gated on the second sub-fork. * SIP-3: Tokenomics v2 fork. Mainnet h=640800, 2026-04-26. Cap 210M -> 315M, halving 42M -> 126M (BTC parity). Block reward and premine unchanged. * SIP-4: Reward distribution v2. Mainnet h=590100, 2026-04-25. Coinbase routes into PROTOCOL_TREASURY with a per-validator accumulator; rewards withdrawn via explicit StakingOp::ClaimRewards draining the accumulator and transferring out of the escrow. All three SIPs are status Final — implementation has been live on mainnet for ~5 weeks. Index table in README updated accordingly. Specifications verified against: - crates/sentrix-core/src/tokenomics.rs (cap, halving constants) - crates/sentrix-core/src/address.rs (TOTAL_PREMINE) - crates/sentrix-core/src/fork_heights.rs (activation gates) - crates/sentrix-staking/src/staking.rs (take_delegator_rewards)
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✨ Finishing Touches🧪 Generate unit tests (beta)
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Summary
Backfill three landmark protocol SIPs that shipped on mainnet between 2026-04-25 and 2026-04-26 but were never documented in this repo:
take_delegator_rewardsand transfers out of escrow.All three are status
Final— implementation has been live on mainnet for ~5 weeks.Verification
Every constant and activation height in these SIPs was verified against the actual chain source on
sentrix-labs/sentrix:main:crates/sentrix-core/src/tokenomics.rs—MAX_SUPPLY= 21000000000000000 sentri (210M),MAX_SUPPLY_V2= 31500000000000000 sentri (315M),HALVING_INTERVAL= 42_000_000,HALVING_INTERVAL_V2= 126_000_000,BLOCK_REWARD= 100_000_000 sentri (1 SRX).crates/sentrix-core/src/address.rs—TOTAL_PREMINE= 6_300_000_000_000_000 sentri (63M SRX).crates/sentrix-core/src/fork_heights.rs—VOYAGER_DPOS_HEIGHT,VOYAGER_EVM_HEIGHT,VOYAGER_REWARD_V2_HEIGHT,TOKENOMICS_V2_HEIGHTdefaults and testnet defaults.crates/sentrix-staking/src/staking.rs:1083—take_delegator_rewardsaccumulator drain.Test plan