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 0x8d385b67e4346c248dedc13e86f1a0dc2dd0dc06b7a6640dc78ad6176a836e2c. 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/d3f5d146-3079-4859-8320-ef158d7330bf.json and https://artists.proofprofile.net/proofs/artist/d3f5d146-3079-4859-8320-ef158d7330bf.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 0x9d257c95151e56919394a2df584b013f74ac4b0c0c52f87bc9702220e13c48ad. 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/5rfQPq1CTjL5iZkvEHHfa7.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/5rfQPq1CTjL5iZkvEHHfa7.
{"copyright_id":"0xb0c3151bb64c8b214ebd2de3eed805d68d8088fd4a2ef4cc29a1d885e73e829f","isrc":"BRBRG1300304","name":"Fogo no Puteiro","registered_at":"2026-06-07T13:44:19Z","spotify_id":"5LmwsSwnQXbGmMWotDJ0AB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c3151bb64c8b214ebd2de3eed805d68d8088fd4a2ef4cc29a1d885e73e829f. 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/5LmwsSwnQXbGmMWotDJ0AB.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/5LmwsSwnQXbGmMWotDJ0AB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825e29516446a7c209434ec7251842a6b1f7f0eea61e05d6b6fda691b63b0ad6. 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/5nNxt6KH3tSMjCsqXlAHRL.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/5nNxt6KH3tSMjCsqXlAHRL.
{"copyright_id":"0x589c45ebeb3ddaa2befcfb7853930ebc68c90ba5f0e02931f18dc6ebc2615dd8","isrc":"BRBRG1300306","name":"Onde Eu Chego Paro Tudo","registered_at":"2026-06-04T11:31:57Z","spotify_id":"5tr99pmoZB1iPrAMRCWOSQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589c45ebeb3ddaa2befcfb7853930ebc68c90ba5f0e02931f18dc6ebc2615dd8. 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/5tr99pmoZB1iPrAMRCWOSQ.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/5tr99pmoZB1iPrAMRCWOSQ.
{"copyright_id":"0xb831e2d2bd62ccffd7d40a7e8edff3bb8860402173d30236ec4770d0022ea8bc","isrc":"BRBRG1300307","name":"Festa do Prazer","registered_at":"2026-06-10T14:22:35Z","spotify_id":"2oBKdZOr0N0hYcnb2qHWx9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb831e2d2bd62ccffd7d40a7e8edff3bb8860402173d30236ec4770d0022ea8bc. 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/2oBKdZOr0N0hYcnb2qHWx9.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/2oBKdZOr0N0hYcnb2qHWx9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe407d5ceb1f0194262caeb66febeb5dd3fe646605c931dd224cf7d1401c1ef8f. 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/2I1ntfZ97KpxTOM4cy1VV5.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/2I1ntfZ97KpxTOM4cy1VV5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a0708b3152706d4e6aa7a1bc51bc81a963ca27fcdb092b941a841c96b83868. 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/1EN85VOe0Cnpvi8a4RF62h.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/1EN85VOe0Cnpvi8a4RF62h.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2335abec578127f068f1e5bd4dc9a39b0b6fc2c800baf0f2bb577b3034f71068. 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/7yWLJkgIf1vVL50xBAo95D.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/7yWLJkgIf1vVL50xBAo95D.
{"copyright_id":"0xda93a47fcd1324dc9a3881ec953bd1d1c04d69737a908b83ed4c5195ade4f813","isrc":"BR90B1400001","name":"Um Brinde ao Retorno","registered_at":"2026-06-07T20:14:31Z","spotify_id":"32jvfJ8fZBDozb4Ika2oWF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda93a47fcd1324dc9a3881ec953bd1d1c04d69737a908b83ed4c5195ade4f813. 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/32jvfJ8fZBDozb4Ika2oWF.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/32jvfJ8fZBDozb4Ika2oWF.
{"copyright_id":"0xef6fd900b9a04fec7b16a176948d6d2de5700b5d6dc71cbdd93b3d22a081512c","isrc":"BRBRG1300311","name":"Embarque na Nave","registered_at":"2026-06-07T00:43:51Z","spotify_id":"5RaTSn65yg5x92EnTFsNpr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6fd900b9a04fec7b16a176948d6d2de5700b5d6dc71cbdd93b3d22a081512c. 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/5RaTSn65yg5x92EnTFsNpr.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/5RaTSn65yg5x92EnTFsNpr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f791a9ac2470935db90b465048062d1f0ebd918872f47b39979975d1ff1ca6. 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/2S186DQ0SKbq6o0bFcGXed.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/2S186DQ0SKbq6o0bFcGXed.