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 0x32b8202ebc035cabcca9815fc23bd2300ba2efd208d2fca593d2b7be3bcd1374. 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/f7cb3383-943c-496c-8848-5861f6c2cfdb.json and https://artists.proofprofile.net/proofs/artist/f7cb3383-943c-496c-8848-5861f6c2cfdb.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 0x3221f9647142908490278a9fb94372310e14bd7a3ac11337a5dd246ca4fe5cab. 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/3jqDIUNeucuWy8dvRDHhVJ.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/3jqDIUNeucuWy8dvRDHhVJ.
{"copyright_id":"0xa10e15edd3e50fff302670c3d9fdb2668021ab44551e65a08440d70b0aa55bdc","isrc":"USA2P1674124","name":"Do Not Disturb","registered_at":"2026-06-27T08:07:39Z","spotify_id":"0pAuBn3fEqANdCHrUn7Yqo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10e15edd3e50fff302670c3d9fdb2668021ab44551e65a08440d70b0aa55bdc. 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/0pAuBn3fEqANdCHrUn7Yqo.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/0pAuBn3fEqANdCHrUn7Yqo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174403d12a5b3d53fde485049c88eb57b1c28974ff641ec94553002ff4ec6419. 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/0sQPTHvM76jKggMKPJYP6E.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/0sQPTHvM76jKggMKPJYP6E.
{"copyright_id":"0xcf65ecd5b7197b17784bd7da9f9294bd193599ed7ec9d6e0d994be53499b5204","isrc":"USC4R2443034","name":"ULTRA SHXT (with Key Nyata)","registered_at":"2026-06-04T06:47:33Z","spotify_id":"5d88Vpyco7yN3iriQqFtMc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf65ecd5b7197b17784bd7da9f9294bd193599ed7ec9d6e0d994be53499b5204. 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/5d88Vpyco7yN3iriQqFtMc.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/5d88Vpyco7yN3iriQqFtMc.
{"copyright_id":"0xcf65ecd5b7197b17784bd7da9f9294bd193599ed7ec9d6e0d994be53499b5204","isrc":"USC4R2443034","name":"ULTRA SHXT (with Key Nyata)","registered_at":"2026-06-04T06:47:33Z","spotify_id":"3JlQAvuSPRdxVsBYcSgIJG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf65ecd5b7197b17784bd7da9f9294bd193599ed7ec9d6e0d994be53499b5204. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3JlQAvuSPRdxVsBYcSgIJG.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/3JlQAvuSPRdxVsBYcSgIJG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6556cff7e79381560f15a1686fd4f019150174092d6a02a68f9649e1f9fdb02c. 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/3cuf6ZRBZLQCf3jKqsT4Cc.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/3cuf6ZRBZLQCf3jKqsT4Cc.