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 0x18af9fc2b7b42bc4833227f29925d1f8a9e73b5cf02b03193bf53f206ee6d568. 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/3699adac-ca70-43f5-ba28-c916e12608da.json and https://artists.proofprofile.net/proofs/artist/3699adac-ca70-43f5-ba28-c916e12608da.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 0xb49a52772af8ecd43c72154c4a6a2fde06701f8c913d90da6c98fa649c270481. 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/5k4Y1IIQgdzl4MM3maevgh.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/5k4Y1IIQgdzl4MM3maevgh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cb35813543df18559461730c4890c54a48c03388721302c6205cd3f0d3bca2. 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/4fXTZi1uAiQTJKfEEowiHY.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/4fXTZi1uAiQTJKfEEowiHY.
{"copyright_id":"0xc235afadd3d0c86dbc0a193ac34990062b1ee0f9e299f50a47195a90da3efd58","isrc":"SEXGF2390316","name":"Taevas In Rain","registered_at":"2026-06-04T15:59:00Z","spotify_id":"1z5pbFxQdGCEkjK4Tmojl0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc235afadd3d0c86dbc0a193ac34990062b1ee0f9e299f50a47195a90da3efd58. 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/1z5pbFxQdGCEkjK4Tmojl0.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/1z5pbFxQdGCEkjK4Tmojl0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63de200a8fb7dfbae09072661c85f4d4de41aad67e49fbc86c339ba15079144b. 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/19LSPAt5axaI12c1zsdObU.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/19LSPAt5axaI12c1zsdObU.
{"copyright_id":"0x6d9af04a1348e278003709d8364991adde28c9ecfed733af951bee01b8775f24","isrc":"SEXGF2390132","name":"Eternal Rain Spaces","registered_at":"2026-06-04T16:32:09Z","spotify_id":"5H6GgWSTOkYVBGxZLJCNHh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9af04a1348e278003709d8364991adde28c9ecfed733af951bee01b8775f24. 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/5H6GgWSTOkYVBGxZLJCNHh.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/5H6GgWSTOkYVBGxZLJCNHh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e6ac645657e85e82296f1f65c4404f54ce4c540805bcb64886d508b9c0458e. 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/7xJb9tZg1TcDO4R1GnzN11.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/7xJb9tZg1TcDO4R1GnzN11.
{"copyright_id":"0xc05a962a2df95e1bcf8bad7482474289a22979a6e4ef78544fa1b9117aecf76b","isrc":"SEXGF2390188","name":"Slowly Stream","registered_at":"2026-06-01T22:11:02Z","spotify_id":"3K5TE2OlvFLnXbRLarLlBd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05a962a2df95e1bcf8bad7482474289a22979a6e4ef78544fa1b9117aecf76b. 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/3K5TE2OlvFLnXbRLarLlBd.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/3K5TE2OlvFLnXbRLarLlBd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7276a5d659953a7865b76d4b5a22283777c3e5385a0f6d789a026d04caf7170f. 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/511etpO36q6qskAqjf34wE.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/511etpO36q6qskAqjf34wE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdad191f9fdc87f8e5866e95b9fd91080d52aacbe8cb4b3a7c162cb224762d87. 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/30zy5ZTqBnD7zvZHISERZY.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/30zy5ZTqBnD7zvZHISERZY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bbfea935999b86f253da3d504066437a76b961d2ac6ed3958c2547b58ce901. 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/28II6Ax4YqYZChXnttuv1K.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/28II6Ax4YqYZChXnttuv1K.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e708034965dbddaecb39eb67b33efab1ff444e79b51b64d4156d8f6cba8197. 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/3Jglomy5aVE2lEZcR9kJG9.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/3Jglomy5aVE2lEZcR9kJG9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c399af907e2b1408d2f569a577ba47a43ef016c416b18003b851ad7ba495f83. 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/6MGM4k4KUGLvDy8Xeieoxq.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/6MGM4k4KUGLvDy8Xeieoxq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ced7857476a295a9d888315b6b54c82590d160fd16292b35d68860415db2a8. 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/5O26eopYWwolqLMIxmJ91G.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/5O26eopYWwolqLMIxmJ91G.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cd9b0048291fee0ed842d8dfacda4b2e5e958bb4f8f8a39740cc6f79bdbdcd. 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/4KNuwSHlzgZIRuT9Ur1JCZ.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/4KNuwSHlzgZIRuT9Ur1JCZ.