RSL may refer to: Military Reserve static line, in skydiving Returned and Services League of Australia, current name (since 1990) of a defence forces veterans organisation Returned Sailors' an
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40eab0d1c7701f9f33736a1d36585e84e1eb2eaed34681bc68b76ce3be4fa368. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d521e8f3-9bb2-4285-8ddf-4c46876fbc03.json and https://artists.proofprofile.net/proofs/artist/d521e8f3-9bb2-4285-8ddf-4c46876fbc03.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).