For the 2024 American western film of the same name, see Outlaw Posse (film). Outlaw Posse was a British hip hop group formed by Bello B (real name Isaac Bello) and K-Gee (real name Karl Gordon). They
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 0x57195b50e2bd98ee1f2be528a621bc9ce31d31f13b364d2fb7c8ce20f5ae70c9. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14dd07d5-56a1-41cc-b5b6-3436951c18e6.json and https://artists.proofprofile.net/proofs/artist/14dd07d5-56a1-41cc-b5b6-3436951c18e6.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.