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 0xdeeecfaf33404df20be5de7ca23e60e409e978021bf818c2da9a4af61de5b24a. 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/97d9bea2-fc67-48d0-a750-57a3eecfc5ab.json and https://artists.proofprofile.net/proofs/artist/97d9bea2-fc67-48d0-a750-57a3eecfc5ab.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 0x67c4492c0346d727ce0089d8f4cd7e78ed6272697bf7a0e026435b5d50f274c4. 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/5C9qgiMuvqnwwu0Yq50i45.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/5C9qgiMuvqnwwu0Yq50i45.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d800b2ead74bc4195e88e191d18704b1f684d401796618aa5fbb8ba5e95b32c. 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/1peyKnHH21F1hGnmmsX8Go.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/1peyKnHH21F1hGnmmsX8Go.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4889bd6fa69dfdf0e4e639708a0c595ad7982835f32c01efa531d06676565912. 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/0f5KJZLUTxWTggswAvQ9sm.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/0f5KJZLUTxWTggswAvQ9sm.
{"copyright_id":"0x98453c73c6d34524548cca5c1dfd8c0302aea39193abec280fd1cde7e6c6e3a6","isrc":"QZTB62222978","name":"Agente do Caos","registered_at":"2026-06-11T16:56:10Z","spotify_id":"0H0V9ArAGpqMfpkTe1Huic","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98453c73c6d34524548cca5c1dfd8c0302aea39193abec280fd1cde7e6c6e3a6. 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/0H0V9ArAGpqMfpkTe1Huic.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/0H0V9ArAGpqMfpkTe1Huic.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a9c20dcb85066ecbce1753dd22458b057dae45a03ed7175efbf022bbc492d3. 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/5z32g6yBZJOhD17TTsJDGp.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/5z32g6yBZJOhD17TTsJDGp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012bd4a2427331e592defd68a6ad2fbe00a7e55f9653f0836597dd0864711f92. 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/30eKwbdNZqudU3JRCFNVx9.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/30eKwbdNZqudU3JRCFNVx9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4f9a1382879f6cd69673238cf1acb9eca476c5415748692a4f740bd4ba4b6b. 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/6NK8mMT6wg4sTfo26mbW5W.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/6NK8mMT6wg4sTfo26mbW5W.
{"copyright_id":"0xa31fe91d9ca2434b9418089af57497e0f106d537180a997fecaafa4d5ddc9083","isrc":"QZMEM2248588","name":"O Mais Poderoso","registered_at":"2026-06-18T12:03:05Z","spotify_id":"04jjnnSgWc9TIGozgI6bDE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31fe91d9ca2434b9418089af57497e0f106d537180a997fecaafa4d5ddc9083. 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/04jjnnSgWc9TIGozgI6bDE.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/04jjnnSgWc9TIGozgI6bDE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e31451dc7dbf0709242e4dd9eadd1e8c6746c369bd7fd04f20e3699a076baac. 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/5R18hopG8PRH5zdVcUl9vJ.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/5R18hopG8PRH5zdVcUl9vJ.
{"copyright_id":"0x437a648f17eff2c861af07eb2a4a00e8fd14ebb8abe4f624037517266525443d","isrc":"QZMEM2245713","name":"Eu Sou a Lenda","registered_at":"2026-06-06T12:35:37Z","spotify_id":"6PoMNikwof0ayNUmmxqZT4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437a648f17eff2c861af07eb2a4a00e8fd14ebb8abe4f624037517266525443d. 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/6PoMNikwof0ayNUmmxqZT4.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/6PoMNikwof0ayNUmmxqZT4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedea8c898b377847886455edab37bbdde36de647b9c724ca2377f03e405305a1. 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/4IWta6pB1VxXslNsFb9CzR.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/4IWta6pB1VxXslNsFb9CzR.
{"copyright_id":"0x038f5b5e7a483c2aea960a063eff7f8fa4b9f2b632ce53b12f9b7e9967c9b694","isrc":"QZNWU2162125","name":"Escudo da Fúria","registered_at":"2026-06-08T23:16:44Z","spotify_id":"2o5fZGahpbPNjSXISNoaFU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038f5b5e7a483c2aea960a063eff7f8fa4b9f2b632ce53b12f9b7e9967c9b694. 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/2o5fZGahpbPNjSXISNoaFU.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/2o5fZGahpbPNjSXISNoaFU.
{"copyright_id":"0xdad8ad68f87b79295958d92ef5f26ae87b8c3dc3cad8047ac80f7b99d2ffe409","isrc":"QZNWU2162123","name":"Tipo Um Dragão","registered_at":"2026-06-21T09:03:27Z","spotify_id":"6UMBoGdPx2hNveRL99mkJu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad8ad68f87b79295958d92ef5f26ae87b8c3dc3cad8047ac80f7b99d2ffe409. 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/6UMBoGdPx2hNveRL99mkJu.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/6UMBoGdPx2hNveRL99mkJu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7121f4b9260201dbdbc4c3f60f07cb3acf361a04821463a3164593463f2d04. 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/28fZ7TX0QU2cY0dGTLQamR.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/28fZ7TX0QU2cY0dGTLQamR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb180f4170b77197b3b32455488154b230360dd29efd91f885fb706394ca2d3c. 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/7nE5kFfhMeogswDLsdb2UP.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/7nE5kFfhMeogswDLsdb2UP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f47699dfccb8f811703ae4e19ca97314923f06d4328d1e9c75784cab2379d34. 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/0RyhPXysQUIrQm67puOJiC.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/0RyhPXysQUIrQm67puOJiC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824115caf82d410f56b8bf9bab0614571e2398bed707eb46b310648cb2c440eb. 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/6PlydqFOnGrV4mzPQWtbr3.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/6PlydqFOnGrV4mzPQWtbr3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6c019e54f423785e1fa1ad94c165c42dc740922eb0b3fccd3307153b9bd2c7. 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/0mg8K2iMZFuCxFWokLdGwY.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/0mg8K2iMZFuCxFWokLdGwY.
{"copyright_id":"0x17bf866d352ed8dcce2852afdce554759460814d9276eec0c9aa659bba91c00b","isrc":"QZK6P2115059","name":"O Escolhido da Mana","registered_at":"2026-06-11T18:17:00Z","spotify_id":"13bocUmT3hYzWgySeENFk8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bf866d352ed8dcce2852afdce554759460814d9276eec0c9aa659bba91c00b. 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/13bocUmT3hYzWgySeENFk8.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/13bocUmT3hYzWgySeENFk8.
{"copyright_id":"0xcf930eacd742dc70ca5a9a710c66dbd3134bdf78f8772f5dba4d1af5836cd80b","isrc":"QZHNC2142853","name":"O Rei do Deserto","registered_at":"2026-06-11T16:53:17Z","spotify_id":"0gZ3e2zp8ObfwADccoFapu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf930eacd742dc70ca5a9a710c66dbd3134bdf78f8772f5dba4d1af5836cd80b. 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/0gZ3e2zp8ObfwADccoFapu.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/0gZ3e2zp8ObfwADccoFapu.