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 0xc8deacdee9e531fb7031136727cd4b7c2e78adeda9cfc091a35e3c83b0c1dadd. 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/b26df30d-ff90-417b-8d6f-cff21bc8ce27.json and https://artists.proofprofile.net/proofs/artist/b26df30d-ff90-417b-8d6f-cff21bc8ce27.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x24ec59346ce5c0e859cc1a9cba61318ed6eb9b6552f06fb77049a553fe99e2a0","isrc":"USCA29300004","name":"The Way She Loves Me","registered_at":"2026-06-07T18:39:28Z","spotify_id":"3bxKHPOZDRJHv0b5Ip5d0p","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 0x24ec59346ce5c0e859cc1a9cba61318ed6eb9b6552f06fb77049a553fe99e2a0. 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/3bxKHPOZDRJHv0b5Ip5d0p.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/3bxKHPOZDRJHv0b5Ip5d0p.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc277a792814d9ece157a78e2a7316839b1e81add6779ff131a20c4d75351f7. 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/6gP96LkVbgYOqRnywQCyMy.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/6gP96LkVbgYOqRnywQCyMy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e045b6e2630ecde1226c213ce0b26306d05b67fc1a3e90e3e589d5f4300d35. 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/2C1FC3fYYCeVAsWthHna6T.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/2C1FC3fYYCeVAsWthHna6T.
{"copyright_id":"0x5b86fb9078a2aff6fd6a9291d34cbced8ff98f9a7b6cb4a1dd1314ebfc3a7b89","isrc":"USCA29301165","name":"Nothing To Hide","registered_at":"2026-06-17T20:21:06Z","spotify_id":"59t2ksSBPkP7HPFOLfHrAT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b86fb9078a2aff6fd6a9291d34cbced8ff98f9a7b6cb4a1dd1314ebfc3a7b89. 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/59t2ksSBPkP7HPFOLfHrAT.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/59t2ksSBPkP7HPFOLfHrAT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c532f80cc956a41d217c0614e38b993b4ac57728f3aa997111030a6db49e92. 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/13zcpq0aEXc0AEhrJfyq2e.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/13zcpq0aEXc0AEhrJfyq2e.
{"copyright_id":"0x14cd2639e7e6dbde3d8d6bfd2d08e6d47a35be9431bc0843177f37228bf688ae","isrc":"USCA29300003","name":"Now And Forever","registered_at":"2026-06-01T07:59:34Z","spotify_id":"2V2pxcEfn5zs79sE7qcewA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cd2639e7e6dbde3d8d6bfd2d08e6d47a35be9431bc0843177f37228bf688ae. 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/2V2pxcEfn5zs79sE7qcewA.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/2V2pxcEfn5zs79sE7qcewA.
{"copyright_id":"0x17a04b6734a55ccf07903bb645bd47f9ae75d7586f179156ab2ba20c9ca0b163","isrc":"USCA29301168","name":"Goodbye, Hollywood","registered_at":"2026-06-19T08:07:18Z","spotify_id":"7iIuMMajYRamkcHrNBfzXU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a04b6734a55ccf07903bb645bd47f9ae75d7586f179156ab2ba20c9ca0b163. 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/7iIuMMajYRamkcHrNBfzXU.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/7iIuMMajYRamkcHrNBfzXU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291f6b866de4bf9979ec9bed5d603ab4249ff1260224448f6eb590499b220e63. 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/4LboaveLxkSavWhf7Q6Msp.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/4LboaveLxkSavWhf7Q6Msp.
{"copyright_id":"0xc0bea8abda93b117aae81e148c61e382c775ca9bfb8e585ce13fd93e9fa1be75","isrc":"USCA29301170","name":"Nothing Left Behind Us","registered_at":"2026-06-07T18:37:52Z","spotify_id":"5EJjSvQX2AcDRPQsM9NHy1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bea8abda93b117aae81e148c61e382c775ca9bfb8e585ce13fd93e9fa1be75. 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/5EJjSvQX2AcDRPQsM9NHy1.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/5EJjSvQX2AcDRPQsM9NHy1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bf172df76e5323ce59001b500072da1ea1d9fb8df5619465e9a41ec28ad615. 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/732MmqQ6UoQb9Tbs6a6m79.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/732MmqQ6UoQb9Tbs6a6m79.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf59a8f9a4a828d6b3201aae03e3186d5f1b77144eaa72726eed1a642dfde48e. 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/5zcu1QREYJ441DpqTFB9Ik.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/5zcu1QREYJ441DpqTFB9Ik.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1535487d65027c3a700001a97fa81b5a45b807c859d05be52e39a6f2ba117de. 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/6kZfXz9TGRezhkzCYPz68I.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/6kZfXz9TGRezhkzCYPz68I.
{"copyright_id":"0x686ef2a8bdb00e8e1d31a085fd0865fce052626d75ed5f82c2982693746f2aba","isrc":"GBBBA0742010","name":"One More Time","registered_at":"2026-06-22T19:29:04Z","spotify_id":"0pBgoq3dzUMKDESrTWNMaG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686ef2a8bdb00e8e1d31a085fd0865fce052626d75ed5f82c2982693746f2aba. 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/0pBgoq3dzUMKDESrTWNMaG.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/0pBgoq3dzUMKDESrTWNMaG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305084a93c310b883453ef25b5c814798744a863db7a895ff3d1398de9fb13fe. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6EwghySxriXfbxqZc3Go6w.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/6EwghySxriXfbxqZc3Go6w.