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 0xf9ae03b20aa84b792c77f8a8fa0153c40de41609b7ea170bda32582669331407. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/996d7c5e-c4d4-474c-860f-190c19492b67.json and https://artists.proofprofile.net/proofs/artist/996d7c5e-c4d4-474c-860f-190c19492b67.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Abigail & the Whale (The Blue Queen of the Deep)
{"copyright_id":"0x926cadca949ab0b74020cbcf27742d820ebc148ce2065dad40ed720b57a23bb3","isrc":"USSUB1409007","name":"Reverie on Norfolk Street","registered_at":"2026-06-28T19:47:29Z","spotify_id":"6XQGxbjYQSf1UQDnzpHVU7","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 0x926cadca949ab0b74020cbcf27742d820ebc148ce2065dad40ed720b57a23bb3. 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/6XQGxbjYQSf1UQDnzpHVU7.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/6XQGxbjYQSf1UQDnzpHVU7.
{"copyright_id":"0xc5844a7b2ed857641d507533a9fde10fcb5f4bcecfc447ccf39bbea49d8976df","isrc":"GBAFL1600050","name":"Till the Morning Comes","registered_at":"2026-06-20T19:04:19Z","spotify_id":"7ftmUXnC5qxOlRztr17o0C","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5844a7b2ed857641d507533a9fde10fcb5f4bcecfc447ccf39bbea49d8976df. 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/7ftmUXnC5qxOlRztr17o0C.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/7ftmUXnC5qxOlRztr17o0C.