1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x30e18d9d6160f38d464bfa8398c4e269ce4f2ad0bc0686d96303fde7ee256258. 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/50302bb5-caed-4081-8491-01523cf3a0b7.json and https://artists.proofprofile.net/proofs/artist/50302bb5-caed-4081-8491-01523cf3a0b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8fcce014bb514ca2c679078dfcf6c27c56eb00ad0f888142f5c131582f1fe5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLA551300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d6baf99367a16e8674459bd06984aa7201f654da3a9d143ae5319c417a0da7. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:34:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLA551300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301438f89bb00d6a8355cbe10065aa70b795bd5fd8bd81c96b37ed39712d9226. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:56:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLA551300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3cd12da1babddb4330ed433c5a8f24520384ca48af15bbdb7b2ad1c877aea2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLA551300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acff08191b6d7a30454e77454c5e306aee47c8b550be116fe3b13b57bb36043. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:40:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLA551300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6412fc384f50a6bd27f10dc129c6f27a760ae45321861d2478e1e222f730cb. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLA551300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd654adb268a8b05015e2c0b15ffb02368e3315be35ad41c7e21279c57c22f0b3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLA551400644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34cbfc39cdb81e3abc05dc580e5a502dabee7a48c3c92838388887944d06114. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:49:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLA551400654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45438817557a8bf492e6c163e0da5aa6938ae1bbf0fde67418b18008b6707f46. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLA291500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3a9f73064ee07dd62b8a3614f810b3948ab4bce4d0ecf8d7b010d7bb711f46. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLA551500081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191edc18f2ee2d9d2c0f9c84aeab521535959817e2a2c57d1f1bed1fc636aa6d. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLA551500756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b47d913b6eb590718a7ad65da81f3d9cc00a1d9be0bef977f3a4921845d88d6. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:19:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLA551500758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0002dac7a811dabad536d4088c6b1bc139a88840e989d25c67c05dc0547d7fa6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC921600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd69e84e0cff488fcd8442f998a203816cf6feb79436933dd78d981d789c4ee2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC921600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0002dac7a811dabad536d4088c6b1bc139a88840e989d25c67c05dc0547d7fa6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC921600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6e974be388405c1057737576acfa5cce4e6c7f2acf3e23463c83afa5a20aa8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC921700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb235559570f94e442a54d5363b1375fc5e4c9b664af22e452baa14f823141922. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC921700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8ed8df7d97d0f657a99ffd8a21643b8453499dc6b0895d6a2c1d17797a48ed. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC921700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c0bd7955c8e685cc4bae6bbf7b8700021c93ad67b2f89128509772689669dc. Chain 2 (Bitcoin): anchored in block 957535 (2026-07-11T07:11:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC921700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3030d836974a9a1bf386467325ebff2c9763fa2888f6d19cac41800838d4e71d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC921700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332e4298a88aceef3d94d05ce43f2508c5f8bd3815a375579fc4bf1303e976f8. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC921700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a263e06031e64b5dbf7a3b869f1a0ba5b9270cea4081363d24506f4c7078ac. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC921700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb235559570f94e442a54d5363b1375fc5e4c9b664af22e452baa14f823141922. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC921700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8ed8df7d97d0f657a99ffd8a21643b8453499dc6b0895d6a2c1d17797a48ed. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC921700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3030d836974a9a1bf386467325ebff2c9763fa2888f6d19cac41800838d4e71d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:15:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC921700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6064dd52f87325910725676a8c0a09d1546b0db4307412fca6ab1f80ce64d24f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC921700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332e4298a88aceef3d94d05ce43f2508c5f8bd3815a375579fc4bf1303e976f8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC921700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc650f5318da7e7ccae48c7555205b24f4cd42017b15f06b8f321d78be1ecc32. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC922000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0da710c6871309769440b975aad75a2fedb790239e3e6499b2b1acacaa2af3. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC922000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc4a10c6bf6f37c1ccd5558c8b67544437ce7a5d3fc241d591d830c317eacbc. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC922000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36af463c5a129ec17e0357eb55c5c8e0cb54ce1d8e082750963d62821cf11e26. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC922200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d51f01e8cd74d251f41a38f39c55c9e1ced9667788dd97a7b14cdf7d5aef48. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:23:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC922200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739560d36aeb847442024495a016c81667c330b0f9887e23bf001ff49d235f14. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:54:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC922200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbceacc976c6c3d18adbfb58e264b117a61f244a98692550089b4518b516f58a6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL48M2500006.