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 0x198a24acfd98479688a369da2aff8924d5cf647f58b654fa6f2aef51f18f9c84. 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/2a0736ee-82c3-4073-8fdd-96de351d700a.json and https://artists.proofprofile.net/proofs/artist/2a0736ee-82c3-4073-8fdd-96de351d700a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xdbaffa63fa955247a23461aa0d5641b4dc9ef0d65ab3cd85bb60e3c7fa61d39a","isrc":"QZMEN2037285","name":"Isso Aqui É Bh 2.0","registered_at":"2026-06-29T04:53:40Z","spotify_id":"5PYpyBvnIjfxUnoavvKmxS","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 0xdbaffa63fa955247a23461aa0d5641b4dc9ef0d65ab3cd85bb60e3c7fa61d39a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5PYpyBvnIjfxUnoavvKmxS.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/5PYpyBvnIjfxUnoavvKmxS.
{"copyright_id":"0x1b18a9d394473f0932be8d29e44c9576f85021aec6aadd008946dc627a8611de","isrc":"QZTVM2357013","name":"Vamo Cair La pra Treta","registered_at":"2026-06-06T17:23:37Z","spotify_id":"1pWTzXqeyuix1RFwQPunEv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b18a9d394473f0932be8d29e44c9576f85021aec6aadd008946dc627a8611de. 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/1pWTzXqeyuix1RFwQPunEv.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/1pWTzXqeyuix1RFwQPunEv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5346281bfff37899950e00de6b1757c557e940c5825a05718f8b0b51810997b. 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/3TTzqMLSNsWpr6Sv13YGwM.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/3TTzqMLSNsWpr6Sv13YGwM.
{"copyright_id":"0x81b00e7b3a1bbf6f8048e3829acbb4db5300b046dd5846a3a223cf487b2262ea","isrc":"BKP9L2400016","name":"Mtg Ela Me Mama De Um Jeito Maneiro","registered_at":"2026-06-09T08:32:41Z","spotify_id":"4B8TeejsVnikduZnHnMoJ2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b00e7b3a1bbf6f8048e3829acbb4db5300b046dd5846a3a223cf487b2262ea. 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/4B8TeejsVnikduZnHnMoJ2.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/4B8TeejsVnikduZnHnMoJ2.
{"copyright_id":"0x1e90a350e30ffef293c2dba5edb284ca87e14d4bc4139ac6306d3c23d06a270c","isrc":"QZZ8B2490679","name":"Hoje é dia de Vuco","registered_at":"2026-06-24T06:22:40Z","spotify_id":"6CnQLmQVZqG96e4og5Rbd1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e90a350e30ffef293c2dba5edb284ca87e14d4bc4139ac6306d3c23d06a270c. 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/6CnQLmQVZqG96e4og5Rbd1.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/6CnQLmQVZqG96e4og5Rbd1.
{"copyright_id":"0x2a6c4329133074d2cd3bcaacb29e14ac9964b09fd7da546745ba99ddb7d88cff","isrc":"QZZEB2416314","name":"Ela Disse que Ela é BI","registered_at":"2026-06-27T02:51:00Z","spotify_id":"15B0P8ATPPUFDMOdSKBuR0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6c4329133074d2cd3bcaacb29e14ac9964b09fd7da546745ba99ddb7d88cff. 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/15B0P8ATPPUFDMOdSKBuR0.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/15B0P8ATPPUFDMOdSKBuR0.
{"copyright_id":"0x23028f0bd67c3f758d3d27116e092dd5677843c92db646541d566ce1b9094de1","isrc":"QZ5FN2593675","name":"Eu to proibido de voltar com minha ex","registered_at":"2026-06-08T20:17:49Z","spotify_id":"3RJ3nOu8hizQvpXVor2GgP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23028f0bd67c3f758d3d27116e092dd5677843c92db646541d566ce1b9094de1. 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/3RJ3nOu8hizQvpXVor2GgP.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/3RJ3nOu8hizQvpXVor2GgP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef5d2ea2835f2a607121b49062f63510b19616e38ade9f8fb9dc14f2280d53c. 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/56HV3BF4uvQ0FQSqWlOja5.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/56HV3BF4uvQ0FQSqWlOja5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91825a08b3a3364a934e1be8b3cf5258c19b4ad58f6f32644ab92688578ac8e8. 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/1GmtlLVjLRIZ57Fi6wap5s.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/1GmtlLVjLRIZ57Fi6wap5s.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934748854e300de098deea7161413ae2281887b858d7cc089e307874336af65a. 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/3zqWpELV3RWsrDJ7pRxdIZ.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/3zqWpELV3RWsrDJ7pRxdIZ.
{"copyright_id":"0x73e13db49a6cf0700de5e6bf2334081301bf895487fade1977f513a4ce0d5ee4","isrc":"BCWK42300009","name":"Modo Pitbull Brabo","registered_at":"2026-06-09T08:26:55Z","spotify_id":"0NlYLXoMLsfszFXhlpp2D4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e13db49a6cf0700de5e6bf2334081301bf895487fade1977f513a4ce0d5ee4. 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/0NlYLXoMLsfszFXhlpp2D4.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/0NlYLXoMLsfszFXhlpp2D4.
{"copyright_id":"0x1693c5abb2a19b0b7c2df3c5c454321ff6556705f0e2ff6ce7afadba192a50a1","isrc":"BCX6W2300091","name":"Feia ou Bonita","registered_at":"2026-06-24T13:27:13Z","spotify_id":"3KFrqQTxfhLHujT399y0e0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1693c5abb2a19b0b7c2df3c5c454321ff6556705f0e2ff6ce7afadba192a50a1. 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/3KFrqQTxfhLHujT399y0e0.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/3KFrqQTxfhLHujT399y0e0.
{"copyright_id":"0xc371781da171e59db50fae2b07b5389c7dc2b41c97d6cd67baf0a74027089122","isrc":"QZGLS2439722","name":"Mtg - Qual Posição Você Gosta","registered_at":"2026-06-24T13:36:26Z","spotify_id":"1q5nj0THMqR5U81AhF5bKv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc371781da171e59db50fae2b07b5389c7dc2b41c97d6cd67baf0a74027089122. 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/1q5nj0THMqR5U81AhF5bKv.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/1q5nj0THMqR5U81AhF5bKv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd7d876de714b69899fb4d814fafb306456a56a0dc50ffc83e30a85f91cc727. 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/4wBh6ShO5ekvo068nptthP.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/4wBh6ShO5ekvo068nptthP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59872cd855f937555f25c7932a4acc0b1d9206b8ab022c66420aed71d5670564. 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/0cwqgSM0ZMK59kQEBqE0J8.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/0cwqgSM0ZMK59kQEBqE0J8.