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 0xf00b2f51abe0d1540c9e1e8576358487943004325f6ad4440d4988dc754c3e3f. 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/4cab0aa1-6c71-4106-bb2b-5b45877f390e.json and https://artists.proofprofile.net/proofs/artist/4cab0aa1-6c71-4106-bb2b-5b45877f390e.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 0xb6618edf0bab2148a2601de045674331081217dababb7433ede0a6218714a420. 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/1GuoZOgu1V3TFH6hpjeRUc.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/1GuoZOgu1V3TFH6hpjeRUc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0460326d20e60c7348e4e4d160901525dc907d8c0469e3abd77fe017f5d46ba9. 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/6731SzODGy1wKR58V94BLn.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/6731SzODGy1wKR58V94BLn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5909035908ce88fa887b67135e32acf746578467aaf308dd1cf801c4351bb076. 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/3rNrDHrebDXlvG2JVrWcMb.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/3rNrDHrebDXlvG2JVrWcMb.
{"copyright_id":"0x8cce20a0cfb9d184538ff545ef4e1f29c340bafa14ad7dfd1a4a4fe122d71df3","isrc":"BK4442400133","name":"Rainha da Revoada","registered_at":"2026-06-04T10:26:36Z","spotify_id":"2pE6KqnEDABNQRWxExL1di","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cce20a0cfb9d184538ff545ef4e1f29c340bafa14ad7dfd1a4a4fe122d71df3. 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/2pE6KqnEDABNQRWxExL1di.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/2pE6KqnEDABNQRWxExL1di.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18746c75fa4b8f04a3405c99712d67ef7337a811c4183a2c2885235c6132c1f. 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/4W87Hv4pBFsE0JEi7enRBQ.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/4W87Hv4pBFsE0JEi7enRBQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69aba10d530dc780c769609561faa4a7bbb4c0c09c49ddbebb4c6864fb72faf9. 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/2JIeww4AtZpBmyI6lfTht4.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/2JIeww4AtZpBmyI6lfTht4.
{"copyright_id":"0xcf29195a55fcd3b8171a0bdb61e32625d05dc054988376bc07db6dbc9e741b9c","isrc":"BK4442400159","name":"Dessa Vez Vai Ser Diferente","registered_at":"2026-06-05T06:57:05Z","spotify_id":"6mn4skfS6Z3VkO28e7mw9K","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf29195a55fcd3b8171a0bdb61e32625d05dc054988376bc07db6dbc9e741b9c. 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/6mn4skfS6Z3VkO28e7mw9K.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/6mn4skfS6Z3VkO28e7mw9K.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f66490652b26a2e3b2eaac947ae122dc273404b2012d5b398a654fe338c083. 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/762El2qGOuqLghbY3unsRX.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/762El2qGOuqLghbY3unsRX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0b06416dfa1146d1c2a70049a9318699cd385717c13951d383aa42a622e44b. 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/5cvblOF9KAmDzvsIrX5KaO.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/5cvblOF9KAmDzvsIrX5KaO.
{"copyright_id":"0x2b8d69cc384320f95c87adcb7ccf33cab07c72c1b9a07789a0a0daf7cad158ae","isrc":"BK4442400162","name":"Foto Polaroid","registered_at":"2026-06-05T16:07:20Z","spotify_id":"5GFgGvXQ94TaVFuAHBUQNB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8d69cc384320f95c87adcb7ccf33cab07c72c1b9a07789a0a0daf7cad158ae. 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/5GFgGvXQ94TaVFuAHBUQNB.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/5GFgGvXQ94TaVFuAHBUQNB.
{"copyright_id":"0x35764496faf1a6f644daadaadf28193a4a5ccc5e742eddb5ddd19e6d4dc5c5af","isrc":"BK4442400132","name":"Donos da Noite","registered_at":"2026-06-04T08:10:46Z","spotify_id":"5LuFqFKDoTYXSr0RjEKhIZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35764496faf1a6f644daadaadf28193a4a5ccc5e742eddb5ddd19e6d4dc5c5af. 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/5LuFqFKDoTYXSr0RjEKhIZ.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/5LuFqFKDoTYXSr0RjEKhIZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c99ac3fc12c44f4944eb68468c79a5650236061e4cfcf5806005be037be5b1. 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/2ppknjRLkyGJEqhsLtPwGd.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/2ppknjRLkyGJEqhsLtPwGd.
{"copyright_id":"0xf754ec259e2648a36b25d6423c95e70c58bbefdb86b427ee98a19be6709b5cc1","isrc":"BK4442400164","name":"Noite de Crime","registered_at":"2026-06-06T02:30:50Z","spotify_id":"0FrSw9xAlHDFmQjZRNrdfV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf754ec259e2648a36b25d6423c95e70c58bbefdb86b427ee98a19be6709b5cc1. 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/0FrSw9xAlHDFmQjZRNrdfV.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/0FrSw9xAlHDFmQjZRNrdfV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c36ba473f0790443a217c74b76603c702fe612de52faa7bef6a202ef9e2f961. 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/2InS5VWKJQbsFBKOsf1cJB.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/2InS5VWKJQbsFBKOsf1cJB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b377645a8787c00489f8f63aa4f778467b54092e2614861a2298c0877dd58c. 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/5jDiJWKgksOhxvaa5qfRJp.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/5jDiJWKgksOhxvaa5qfRJp.
{"copyright_id":"0x775c6a0020133253e3f2f63ce126d57d369973da9691fef6a9d8b725843c5f4c","isrc":"QZ5AB2313051","name":"Varias Siliconada","registered_at":"2026-06-19T08:03:40Z","spotify_id":"0NLLvYHhDFHWipCJSSVwch","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775c6a0020133253e3f2f63ce126d57d369973da9691fef6a9d8b725843c5f4c. 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/0NLLvYHhDFHWipCJSSVwch.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/0NLLvYHhDFHWipCJSSVwch.
Fernando de noronha (feat. DJ Glenner, Gabb MC, MC Bruno MS, MC GP, MC Rhamon, Mc Dena & TrapLaudo)
{"copyright_id":"0xbc3cd4d6f85c7a359d2fdb06e0e76e38a2ec3a22a5d9200fba19d76b39fae5b7","isrc":"BRWMB2301124","name":"Fernando de noronha (feat. DJ Glenner, Gabb MC, MC Bruno MS, MC GP, MC Rhamon, Mc Dena & TrapLaudo)","registered_at":"2026-06-01T18:50:15Z","spotify_id":"5su3N4rf3kFeHe3EfhA5ZO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3cd4d6f85c7a359d2fdb06e0e76e38a2ec3a22a5d9200fba19d76b39fae5b7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5su3N4rf3kFeHe3EfhA5ZO.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/5su3N4rf3kFeHe3EfhA5ZO.