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 0x4382e07f753fb7089bfbb1f5163397dddd02066439da7b09cdb5e6642b3e325e. 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/f87f8fbf-7bc3-482b-a828-c9a3e83f40da.json and https://artists.proofprofile.net/proofs/artist/f87f8fbf-7bc3-482b-a828-c9a3e83f40da.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x14abc6cd35fdbbef8a72ceadcf427a13ff5ee2e8cefe299d5ca86f7235cebd2d","isrc":"TCACP1628541","name":"Mi Vida es El","registered_at":"2026-06-29T18:49:31Z","spotify_id":"781e74ze5bWKyA53ifyfpA","type":"track"}
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 0x14abc6cd35fdbbef8a72ceadcf427a13ff5ee2e8cefe299d5ca86f7235cebd2d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/781e74ze5bWKyA53ifyfpA.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/781e74ze5bWKyA53ifyfpA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902bbc6aaa8a1bfccdcc5a99c4ab72d3eb44500574113995fc2c299a3f6a434d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4gFhXZaKk1e4b3S2gk8Opz.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/4gFhXZaKk1e4b3S2gk8Opz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536abdecd29815c9ed83eea4fc041de9a502b9098537e4491228a733088e3749. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7d5ySMccjz1sjmE4PW9C9v.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/7d5ySMccjz1sjmE4PW9C9v.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d9fb4227097095f09fb4a53ab280af21d418d9adca1fcf57a51848f22c054e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0iUK27HyizyBJsUd53Domw.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/0iUK27HyizyBJsUd53Domw.
{"copyright_id":"0x52fbae7f6f7b29d30c4404a3e4dbee8cf3c5ff19f1bb9f0e0ee983246d72557d","isrc":"ES64E2450162","name":"Yet - Spanish Version","registered_at":"2026-06-23T16:16:49Z","spotify_id":"4KvBQlH3IaMHy3eqIqqB7i","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fbae7f6f7b29d30c4404a3e4dbee8cf3c5ff19f1bb9f0e0ee983246d72557d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4KvBQlH3IaMHy3eqIqqB7i.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/4KvBQlH3IaMHy3eqIqqB7i.