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 0xf3823b529dab8230e8d423b48c7fdd022418564e2556a6056f89241111320f7b. 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/b1f8fed3-e127-4f5c-952e-103c48c5fe21.json and https://artists.proofprofile.net/proofs/artist/b1f8fed3-e127-4f5c-952e-103c48c5fe21.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xb4c28ff80c5dee9704af357fa51e2a67479a59b64b66815b16b74503bba63f0e","isrc":"QZ57A1803110","name":"Yas Remix Feat G Herbo","registered_at":"2026-06-29T12:28:49Z","spotify_id":"2gFCfaeDRrIVisFPJ4CdNW","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 0xb4c28ff80c5dee9704af357fa51e2a67479a59b64b66815b16b74503bba63f0e. 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/2gFCfaeDRrIVisFPJ4CdNW.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/2gFCfaeDRrIVisFPJ4CdNW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95676d2d08fea53b34ec8b9f2cc4cbf3d0d36c1febebbc5ece095642b1786f33. 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/5Vu71ftqn00zbdS3BrOCj4.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/5Vu71ftqn00zbdS3BrOCj4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec83b7a616383f55ee66b040ae2db6253cee3eb492becb378b792a3b89a75c6. 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/0icI5GfDfSYel9RQAnIykR.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/0icI5GfDfSYel9RQAnIykR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec83b7a616383f55ee66b040ae2db6253cee3eb492becb378b792a3b89a75c6. 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/47fXcvXeGCSVrplLDU0koL.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/47fXcvXeGCSVrplLDU0koL.
{"copyright_id":"0x9e4ecf26d4828edc9c7ed9c4b91616b9b8545c4210f1c0928c77ed0d73b0f827","isrc":"QZ57A1600014","name":"Pain (feat. Sonta and J Tsunami)","registered_at":"2026-06-09T08:55:46Z","spotify_id":"3Qt1wrcMPSXXxqeidsSsGb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4ecf26d4828edc9c7ed9c4b91616b9b8545c4210f1c0928c77ed0d73b0f827. 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/3Qt1wrcMPSXXxqeidsSsGb.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/3Qt1wrcMPSXXxqeidsSsGb.
{"copyright_id":"0x840c5bd11d6684fa14c2e975deae020e3bba73786e56b47fdeb11e4b826d7fa6","isrc":"USLD91719803","name":"Decline (feat. Sonta)","registered_at":"2026-06-09T17:26:21Z","spotify_id":"18Vf8Ritaw2Kf1TudXCe1q","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840c5bd11d6684fa14c2e975deae020e3bba73786e56b47fdeb11e4b826d7fa6. 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/18Vf8Ritaw2Kf1TudXCe1q.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/18Vf8Ritaw2Kf1TudXCe1q.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066d1d765cd1798ac6be230a5680727187bbc2b422c13f76e31bc628d456a648. 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/2n66PF5d7VfiHGpISczfJk.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/2n66PF5d7VfiHGpISczfJk.