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 0xa4f8e94d9badcd627415e067d68cddc903e71a5d8eeac9fa1350bb56f4ba1f65. 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/2029e1bf-0860-4785-a44f-a31f57cbcb61.json and https://artists.proofprofile.net/proofs/artist/2029e1bf-0860-4785-a44f-a31f57cbcb61.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x3d4d37eb536550040fb31ba59e4feef044b122b48bfc5785341db05a6b13bd16","isrc":"QZHN72441490","name":"Welcome To The Baile","registered_at":"2026-06-27T02:24:13Z","spotify_id":"6CdMUoRTkP4HMSJp4zIk1j","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 0x3d4d37eb536550040fb31ba59e4feef044b122b48bfc5785341db05a6b13bd16. 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/6CdMUoRTkP4HMSJp4zIk1j.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/6CdMUoRTkP4HMSJp4zIk1j.
{"copyright_id":"0x8fc8f3dd5993419e53f4ec8e3f7bd2fc325a7680d61aa8b50a9fe9b6a06eb377","isrc":"QZMHN2459353","name":"Acid Baile 2","registered_at":"2026-06-25T21:33:07Z","spotify_id":"35tYZWODy3OBTHrNenecb8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc8f3dd5993419e53f4ec8e3f7bd2fc325a7680d61aa8b50a9fe9b6a06eb377. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/35tYZWODy3OBTHrNenecb8.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/35tYZWODy3OBTHrNenecb8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fd408aaa5e5374e9e45cc720b321932948d85ea2329b07582c11860050e2fb. 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/0ogoIDiS5viPGVz4DX02uE.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/0ogoIDiS5viPGVz4DX02uE.
{"copyright_id":"0x90f0f97512a5926bc74402281dde92b50bf830ecb4b4ec1fb9039db5e9dc13fc","isrc":"BCK142300019","name":"Bruxaria Sulamericana","registered_at":"2026-06-24T06:38:27Z","spotify_id":"5LaTekuPDDNDEp3WHdIjE6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f0f97512a5926bc74402281dde92b50bf830ecb4b4ec1fb9039db5e9dc13fc. 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/5LaTekuPDDNDEp3WHdIjE6.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/5LaTekuPDDNDEp3WHdIjE6.
{"copyright_id":"0xdb1b4e35f7c82609ea1188900241d7eea60473e74ddafa60eea9d8b46127d7f3","isrc":"QZFZ22463649","name":"Bruxaria Canônica","registered_at":"2026-06-04T16:50:08Z","spotify_id":"7CYEnt9QJb6PX3GbfEjWXo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1b4e35f7c82609ea1188900241d7eea60473e74ddafa60eea9d8b46127d7f3. 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/7CYEnt9QJb6PX3GbfEjWXo.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/7CYEnt9QJb6PX3GbfEjWXo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7d903f0b5ae842d4ef055c297798ca13bc82d0b2cc56e89145b599048788f1. 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/7mVoSuMqg9j2dtr2cwGNwV.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/7mVoSuMqg9j2dtr2cwGNwV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f127093a36416a3945fec9232438ed10c510ceba80159f1f8a25329d4a6f05. 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/1803I0z4Rhw7OnHGmdPN9T.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/1803I0z4Rhw7OnHGmdPN9T.
{"copyright_id":"0xa128db4b6decd71eabb9347e8ee3c62acbae52d3f87dd6b1aec3a9df977d5c4c","isrc":"QZTBC2378091","name":"Bota Palma da Mão no Chão","registered_at":"2026-06-10T17:48:37Z","spotify_id":"0Qm7pE9PVNEIKi6k8GIbR8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa128db4b6decd71eabb9347e8ee3c62acbae52d3f87dd6b1aec3a9df977d5c4c. 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/0Qm7pE9PVNEIKi6k8GIbR8.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/0Qm7pE9PVNEIKi6k8GIbR8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e11fac6c379bed9eedb5c5fd983c6785e16eb721a1a6a603953b5537079428. 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/5Cj5Wg1JgQzRBWgASrl6ld.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/5Cj5Wg1JgQzRBWgASrl6ld.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec4899e889254a90a860a9684107050e93e220f8281e1cb62e6ca0d02cf6bac. 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/1NivuXXIArcrEqnBSzj74Y.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/1NivuXXIArcrEqnBSzj74Y.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232d928611dc8362962cd5c8c8878fbed16474804b1fd8747187fb04c067200d. 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/2yMJAldBPKVGf3u2OZmP3A.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/2yMJAldBPKVGf3u2OZmP3A.
{"copyright_id":"0x569d32e532f5e6027ef89f34de63d8b54c3e37a8f6dae2e1f41de1aebd249f53","isrc":"QZMHP2385598","name":"Acid Baile","registered_at":"2026-06-19T11:42:51Z","spotify_id":"1KCBlwVmwBgucZ4aHOwrma","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569d32e532f5e6027ef89f34de63d8b54c3e37a8f6dae2e1f41de1aebd249f53. 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/1KCBlwVmwBgucZ4aHOwrma.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/1KCBlwVmwBgucZ4aHOwrma.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed5da6061b101ae060f1da348bc0d333a024397415d76500925e049c3271e08. 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/1dY8RSHI0R1LzNpj4UUMxt.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/1dY8RSHI0R1LzNpj4UUMxt.
{"copyright_id":"0xcfc886fe0b516c92add5038d1cf3722c85711bf0585decd37151cc659777c069","isrc":"QZHZ51958164","name":"Aquecimento do Adame","registered_at":"2026-06-05T08:42:44Z","spotify_id":"3Vth2UrIVXXzcLEk7j75fJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc886fe0b516c92add5038d1cf3722c85711bf0585decd37151cc659777c069. 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/3Vth2UrIVXXzcLEk7j75fJ.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/3Vth2UrIVXXzcLEk7j75fJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3e160b328b1d2590e5b030ee2518b7e0969d74c69a933a2d281a8a68f965c0. 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/2AYe4ZhztbM2Fj4Rn4SSq3.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/2AYe4ZhztbM2Fj4Rn4SSq3.
Humildes do Som Coletivo, Vol. 2 (LADO B)
{"copyright_id":"0xf9dc12d905dfa55606af1feed7c8bc048287ec4a3fbe06d82b1dc9d011c973b6","isrc":"QZES52442099","name":"Segunda a Quinta","registered_at":"2026-06-07T19:30:17Z","spotify_id":"1hq6Qn0y36EhspkXA367kf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9dc12d905dfa55606af1feed7c8bc048287ec4a3fbe06d82b1dc9d011c973b6. 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/1hq6Qn0y36EhspkXA367kf.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/1hq6Qn0y36EhspkXA367kf.