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 0x7d32765e4919641c751269c00411a97b0db9e5da1447cdb599177616864b29a8. 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/2a42a201-8127-4704-9c6d-b2fdce85babc.json and https://artists.proofprofile.net/proofs/artist/2a42a201-8127-4704-9c6d-b2fdce85babc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xc9373fae1bff99328b84ebbcf2c7a76078ef5481160ed31dd90d6ec7c862074e","isrc":"MXUM72201543","name":"¿Y Cómo?","registered_at":"2026-06-07T11:08:00Z","spotify_id":"0LAitaHvVwdyjQcVJYyFAF","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 0xc9373fae1bff99328b84ebbcf2c7a76078ef5481160ed31dd90d6ec7c862074e. 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/0LAitaHvVwdyjQcVJYyFAF.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/0LAitaHvVwdyjQcVJYyFAF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d953ca3ea5eb0a42e662b4238d4c1ecdecd03a3c0c6f8adb4a31128af76d71. 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/5Eqm9fXHYbLxS2xR48tEfL.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/5Eqm9fXHYbLxS2xR48tEfL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9373fae1bff99328b84ebbcf2c7a76078ef5481160ed31dd90d6ec7c862074e. 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/53GolsNPMPHsR8gBen13Pn.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/53GolsNPMPHsR8gBen13Pn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5419667d54ee4cd6301d8fb97c6b3b5dbea4056dd52cc279214127a500f8e310. 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/7iF9WZqCVKUHV93XykSFgZ.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/7iF9WZqCVKUHV93XykSFgZ.
{"copyright_id":"0xa8334b986c3524ff41741af460d7ce6ac60517e90e6ff0775face51aae86481d","isrc":"ES09S2200001","name":"Seguiremos Siendo","registered_at":"2026-06-07T20:18:46Z","spotify_id":"6dFQVanecW7EOErbmLcije","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8334b986c3524ff41741af460d7ce6ac60517e90e6ff0775face51aae86481d. 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/6dFQVanecW7EOErbmLcije.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/6dFQVanecW7EOErbmLcije.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad28784274dd9304eea4349a57196be163fab84a03a102a12680befb03c5cd9b. 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/3tJfXoQRo67NlEoF8EEKmJ.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/3tJfXoQRo67NlEoF8EEKmJ.
{"copyright_id":"0x9560f6f7d54b1ee3133a0abbee42a729855cdb60097316fbc6fb03140eb109a3","isrc":"USUG12202726","name":"Fin Del Mundo (with Bratty)","registered_at":"2026-06-04T09:52:35Z","spotify_id":"4bWKxHYB7QGYobbiQawHXQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9560f6f7d54b1ee3133a0abbee42a729855cdb60097316fbc6fb03140eb109a3. 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/4bWKxHYB7QGYobbiQawHXQ.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/4bWKxHYB7QGYobbiQawHXQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe96777fa5f0b492cb13040f44f5aa8c6256467fc6e53507c59f2fec6e93c20. 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/2M0pPfPgK2HXSsGt7X3VbE.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/2M0pPfPgK2HXSsGt7X3VbE.
{"copyright_id":"0x9560f6f7d54b1ee3133a0abbee42a729855cdb60097316fbc6fb03140eb109a3","isrc":"USUG12202726","name":"Fin Del Mundo (with Bratty)","registered_at":"2026-06-04T09:52:35Z","spotify_id":"7FRc6HLZNlE0XFD1JIsw46","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9560f6f7d54b1ee3133a0abbee42a729855cdb60097316fbc6fb03140eb109a3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7FRc6HLZNlE0XFD1JIsw46.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/7FRc6HLZNlE0XFD1JIsw46.
{"copyright_id":"0x00baadc48b8f3e14e49ecf6ca847f417e0709a999ea282573040975ffff075cd","isrc":"GBMVH2200210","name":"Things will be fine - Bratty Remix","registered_at":"2026-06-05T23:38:46Z","spotify_id":"4Af2TwsKHF9Hn10ltZ8xmg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00baadc48b8f3e14e49ecf6ca847f417e0709a999ea282573040975ffff075cd. 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/4Af2TwsKHF9Hn10ltZ8xmg.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/4Af2TwsKHF9Hn10ltZ8xmg.
ed maverick en el metropólitan (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a91653915ac2862907c7152a7563d91a8edb17a039f26ba70db4e269b2c504. 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/1CrF7ut2mjJIVEklJRKlqO.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/1CrF7ut2mjJIVEklJRKlqO.
{"copyright_id":"0xabe96777fa5f0b492cb13040f44f5aa8c6256467fc6e53507c59f2fec6e93c20","isrc":"QZ8LD1948288","name":"Ropa De Bazar","registered_at":"2026-06-01T06:27:19Z","spotify_id":"7kWFRZdedr2gtfE8JDumVZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe96777fa5f0b492cb13040f44f5aa8c6256467fc6e53507c59f2fec6e93c20. 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/7kWFRZdedr2gtfE8JDumVZ.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/7kWFRZdedr2gtfE8JDumVZ.
{"copyright_id":"0xca5d3ba6ff876acf7ad1d247838ddc4f9af15c5594b5775c2dbf39e68c6ae59f","isrc":"ES71G2153566","name":"Patinar Sobre Hielo","registered_at":"2026-06-18T02:41:37Z","spotify_id":"2lq8hCV4li1m4tzu9vZDtN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5d3ba6ff876acf7ad1d247838ddc4f9af15c5594b5775c2dbf39e68c6ae59f. 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/2lq8hCV4li1m4tzu9vZDtN.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/2lq8hCV4li1m4tzu9vZDtN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad28784274dd9304eea4349a57196be163fab84a03a102a12680befb03c5cd9b. 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/2FoUIyGK8ddv0LQQWrd5Ie.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/2FoUIyGK8ddv0LQQWrd5Ie.