1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x8527ce99fc5a70451e26ebb59539f4e3012ca19c5c2a73cd3e181f2b13d2acec. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63f9c423-6d71-4692-83a2-03630288ed26.json and https://artists.proofprofile.net/proofs/artist/63f9c423-6d71-4692-83a2-03630288ed26.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86a4b79dd1462cb1e4e493a89e0680c49d79a00afd8a3ed50e116e0ab769672. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4C7qvsK66JTecr696Ynd2b.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4C7qvsK66JTecr696Ynd2b.
{"copyright_id":"0xa443f5889ff268c6964e0e3b02c2421dd4cd6ddd4f308b433e809b7ebcb43a08","isrc":"BR9NO1300002","name":"Bagaço (feat. Nengo Vieira)","registered_at":"2026-06-06T10:58:28Z","spotify_id":"2NxOxLKCjw8XX7Fs5QqJCV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa443f5889ff268c6964e0e3b02c2421dd4cd6ddd4f308b433e809b7ebcb43a08. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2NxOxLKCjw8XX7Fs5QqJCV.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2NxOxLKCjw8XX7Fs5QqJCV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fca01c9265f56c81729743e178e10040be29a4f50363e51f67f5cadc31811c8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1sxWx53gmLRdqmSi7GNatw.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1sxWx53gmLRdqmSi7GNatw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879204d3a5a7e57a4dacfcb71bd561dc3ff881e3c9f005bca141b4fa22187a00. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2sc0zU52vNJZiX01sEUTqD.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2sc0zU52vNJZiX01sEUTqD.