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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbb59a5fcd4dd257af6e5089690e3fd93eb8696a4064cc4f5a5889ed2234a50. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/57317d17-9d6e-4ac1-9b0e-d95be8cc2082.json and https://artists.proofprofile.net/proofs/artist/57317d17-9d6e-4ac1-9b0e-d95be8cc2082.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sufoco / De Tanto Te Querer / Esperando Na Janela (Gabi ao Vivo no Porto)
Transplante / Ausência / Bem Pior Que Eu (Gabi ao Vivo no Porto)