SOA may refer to: Arts, entertainment, and media Siege of Avalon, a 2000 computer role-playing game Soldiers of Anarchy, a 2002 real-time tactics computer game Sons of Anarchy, an FX television se
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 0x43a8d49f674e407d3f9404fa421c08a13fa2611460f53663f144230d2e162ffb. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d7c13ac-331e-46e5-9578-18fa13c6f8cc.json and https://artists.proofprofile.net/proofs/artist/2d7c13ac-331e-46e5-9578-18fa13c6f8cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).