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 0xc812fbfde46e02fd210cbb1b292fa523d08a1bea371304be0e3f89dc5df61527. 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/a9a85407-f289-4ee4-8e40-8a5fe3479912.json and https://artists.proofprofile.net/proofs/artist/a9a85407-f289-4ee4-8e40-8a5fe3479912.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 0xb607396dfd0d3db985b28822281a7e3bcd50c4fd0be881cc3804acc6390fc9c7. 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/0R5uhGKtmnyDPV5i2oGnKo.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/0R5uhGKtmnyDPV5i2oGnKo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d29dc016855c09f89ad6bc9a1ad82e45130813d17ca0d8ac95240c194aecef. 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/1LvG5zrLHfYziFPjaNGpyw.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/1LvG5zrLHfYziFPjaNGpyw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35864397bca102b4d5eb10f13365fdc977074be8201e4364e2bb29e1dc5b4341. 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/2815NyDJYdeVvWeUw0R92Y.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/2815NyDJYdeVvWeUw0R92Y.
{"copyright_id":"0x23549c46a1e10762083ea31d6ea9e6b1f13ad03a21c8573fd19bc6d76e1328f5","isrc":"BC82V2300009","name":"TRANQUILA & MENININHA","registered_at":"2026-06-22T07:45:32Z","spotify_id":"7MgiDQwJnVtq6cqZGTSRbJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23549c46a1e10762083ea31d6ea9e6b1f13ad03a21c8573fd19bc6d76e1328f5. 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/7MgiDQwJnVtq6cqZGTSRbJ.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/7MgiDQwJnVtq6cqZGTSRbJ.
{"copyright_id":"0x7a4f8759af777654db57a7d9c1a886ed9e269113b0413bcece2087ef5bdb3a16","isrc":"BC82V2300005","name":"DEUS É UMA MULHER PRETA","registered_at":"2026-06-27T13:57:07Z","spotify_id":"4rA5S3VmcG1VfKN0jGOehZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4f8759af777654db57a7d9c1a886ed9e269113b0413bcece2087ef5bdb3a16. 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/4rA5S3VmcG1VfKN0jGOehZ.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/4rA5S3VmcG1VfKN0jGOehZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567dc76b93aec85851868f1f8223709b9e95497fb585f95246127a94091eed78. 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/2RUnj6jSxsMSaSANhhMTbr.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/2RUnj6jSxsMSaSANhhMTbr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71691187ef3d62bb327da036da264155446cd283c5573f84b52a6db9baf4a61. 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/0pKlZzpIbf6eogSrnX1eBv.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/0pKlZzpIbf6eogSrnX1eBv.