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 0x8550c7508f75f1e6c59a7ef309f2886a2395cb9f6cb2892b6f5a76c2d38b904e. 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/f4350427-7296-4a2d-b5a0-082e8acd684a.json and https://artists.proofprofile.net/proofs/artist/f4350427-7296-4a2d-b5a0-082e8acd684a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Clásicos Populares Gregorianos: Argentina
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 0xa5a42f440e72f770d66117baa607c03d9465df3ea41e2434c77aef03c05a0538. 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/6zhlvAVV2Bg9Wx3mrjy7pJ.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/6zhlvAVV2Bg9Wx3mrjy7pJ.
Clásicos Populares Gregorianos: Internacional
{"copyright_id":"0xb0c8dfd63199705ed2eb19c14794bbd1a353562ef4ad26a0bbbf585f6dc077ca","isrc":"CLEN21400956","name":"Yesterday - Versión en Español","registered_at":"2026-06-22T11:40:06Z","spotify_id":"5rMDgT2FC5WibPDnKkmIbi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c8dfd63199705ed2eb19c14794bbd1a353562ef4ad26a0bbbf585f6dc077ca. 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/5rMDgT2FC5WibPDnKkmIbi.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/5rMDgT2FC5WibPDnKkmIbi.
{"copyright_id":"0x5c9021afe74bbfe2558d3c8061b3dd1b1ee978c8a12153909bb55f5defb35dac","isrc":"CLEN21400959","name":"Memory - Versión en Español","registered_at":"2026-06-25T00:16:44Z","spotify_id":"12wBF5Pa51VNDyO0RNnvAB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9021afe74bbfe2558d3c8061b3dd1b1ee978c8a12153909bb55f5defb35dac. 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/12wBF5Pa51VNDyO0RNnvAB.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/12wBF5Pa51VNDyO0RNnvAB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe56320e5d845cfd5c7e9635f2ad29ced7cd7f06a3bdbd3cdda1aec6a73583d. 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/681fLHGmvavGByPvrV23Vi.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/681fLHGmvavGByPvrV23Vi.
{"copyright_id":"0xc49a882a152c7ee2fc478a73f2b0deb8fb47c2c9be65baa6bf7562f3b2fb5b94","isrc":"CLEN21400964","name":"Sueño Imposible","registered_at":"2026-06-19T19:03:49Z","spotify_id":"6KzJDOtBnCw1HvNwUFW7sS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49a882a152c7ee2fc478a73f2b0deb8fb47c2c9be65baa6bf7562f3b2fb5b94. 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/6KzJDOtBnCw1HvNwUFW7sS.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/6KzJDOtBnCw1HvNwUFW7sS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00045e4d40743258f21e20257e5214294e63401dc297431d46ffbe3b194aa6c3. 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/77eauFQchZ0oeZkWCBTJhm.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/77eauFQchZ0oeZkWCBTJhm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46664ee9856d7026e81d92f54e24f75cb762eef27f19f9459739b0bf5c7204eb. 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/7DZuHsGk2tMUt6B3RKOK7U.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/7DZuHsGk2tMUt6B3RKOK7U.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5439d4f067ffc811391b84485ae54a7f5b10736193a27a3865781866f7da4f2. 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/4kLqosKdaEd46bEldW9Lcc.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/4kLqosKdaEd46bEldW9Lcc.
{"copyright_id":"0x426ec22880bcf21ca61914e5d4bfdb41915a79069eeb6e987db40589f3d90dad","isrc":"CLEN21401007","name":"Al Pasar Esa Edad","registered_at":"2026-06-24T20:47:01Z","spotify_id":"3ckVWGe3H8xUndL5hDZiJT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426ec22880bcf21ca61914e5d4bfdb41915a79069eeb6e987db40589f3d90dad. 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/3ckVWGe3H8xUndL5hDZiJT.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/3ckVWGe3H8xUndL5hDZiJT.
{"copyright_id":"0x58bf63b842136e62ddbaf04de81dab9232402e905d9dcccd3d785f29150b06de","isrc":"CLEN21401009","name":"El Corralero","registered_at":"2026-06-25T13:45:08Z","spotify_id":"0bgpwP5yXEd7rxfhMTfXWV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bf63b842136e62ddbaf04de81dab9232402e905d9dcccd3d785f29150b06de. 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/0bgpwP5yXEd7rxfhMTfXWV.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/0bgpwP5yXEd7rxfhMTfXWV.