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 0x7f211cfcf5058b85ad90f157e503dea170a31306e3abfb153a9c46a96b4c5a7e. 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/6ad6fed7-6107-4416-b03c-4d98eb869edd.json and https://artists.proofprofile.net/proofs/artist/6ad6fed7-6107-4416-b03c-4d98eb869edd.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 0x78148b894c1fe505d12f9bd6e93298eb8f3bfcab0997be9923d2877f9f144000. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2sDbG7WcXyEF6etp1aL1ST.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/2sDbG7WcXyEF6etp1aL1ST.
{"copyright_id":"0xe13c0218dc8e8b7dd25b6a3a5e6f44e583c609349c8a6e75a294d92477a6cfd0","isrc":"ES5301252055","name":"Las cosas pequeñitas - Mix","registered_at":"2026-06-04T07:16:23Z","spotify_id":"6ILh8Kypi5rnlOV8LzvVtj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13c0218dc8e8b7dd25b6a3a5e6f44e583c609349c8a6e75a294d92477a6cfd0. 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/6ILh8Kypi5rnlOV8LzvVtj.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/6ILh8Kypi5rnlOV8LzvVtj.
Suite Festiva de Éxitos (II): Dirty Press / La Prensa / Harina De Maíz / A Nuestro Aire / Vámonos Pa' Jerez
{"copyright_id":"0x29accd0ab6d6e07ca57a82dd7cda0ef61e0280cc2781618158ce3b8d194b03a4","isrc":"ES5701001273","name":"Suite Festiva de Éxitos (II): Dirty Press / La Prensa / Harina De Maíz / A Nuestro Aire / Vámonos Pa' Jerez","registered_at":"2026-06-09T18:52:31Z","spotify_id":"5I1Qa7LHxBqiZhqnGTgvlN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29accd0ab6d6e07ca57a82dd7cda0ef61e0280cc2781618158ce3b8d194b03a4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5I1Qa7LHxBqiZhqnGTgvlN.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/5I1Qa7LHxBqiZhqnGTgvlN.