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 0xf29b7c9ceebf79df3b812269e5433f673e84be0789ed733c22812891870bd6f0. 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/f182e1bb-c54d-484f-bed2-9a155e7bd25a.json and https://artists.proofprofile.net/proofs/artist/f182e1bb-c54d-484f-bed2-9a155e7bd25a.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 0xf80f61306b06c6c7409aca252cf2a32233d4741c9bcbd14e72cf819700c39512. 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/38ei3JbvAchPdj4S2aVY4q.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/38ei3JbvAchPdj4S2aVY4q.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5de2f77599f7536928d2f9faae1a48f9c2dee7134cac91f8dcdb1f9b4099bfa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5ctQmf7sMENkJ69184pKvs.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/5ctQmf7sMENkJ69184pKvs.
{"copyright_id":"0xd284c8b9622ff9516d74b9e8ed8c7cbf96562c9bf6d7ca9f923ed4a7c32d78a0","isrc":"US3DF2420041","name":"Hinoki Woods","registered_at":"2026-06-24T21:08:22Z","spotify_id":"5NiQmnn5YfguN72ETohAUa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd284c8b9622ff9516d74b9e8ed8c7cbf96562c9bf6d7ca9f923ed4a7c32d78a0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5NiQmnn5YfguN72ETohAUa.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/5NiQmnn5YfguN72ETohAUa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5de2f77599f7536928d2f9faae1a48f9c2dee7134cac91f8dcdb1f9b4099bfa. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0cnkhidsUM8nHpxVH8dVkg.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/0cnkhidsUM8nHpxVH8dVkg.
{"copyright_id":"0x618a589002f891d2ebed53bead55577f0669dec8de3bcfcccdc59a964c746e1b","isrc":"US3DF2275408","name":"I’m Sorry","registered_at":"2026-06-23T02:24:15Z","spotify_id":"1fABkApKuxE5liqE91dIel","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618a589002f891d2ebed53bead55577f0669dec8de3bcfcccdc59a964c746e1b. 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/1fABkApKuxE5liqE91dIel.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/1fABkApKuxE5liqE91dIel.