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 0x49f889c82163a396213c5a261af829400ea3be0d103e238f87560b2d019887fe. 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/c75995fa-d69e-4c4d-8018-ef11150baacd.json and https://artists.proofprofile.net/proofs/artist/c75995fa-d69e-4c4d-8018-ef11150baacd.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 0x53ed998f806a94cad7efe3b669e96815df8c1d7d2cccd477718a75cf768f3adc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX452077002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68015d85ee72e4150b4ed16c8b1330188d0e13101b81a2963fa3689a7ab9e1c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRX282084762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2061ce90bd824b5b3441826b37b9932ae387c2315d71e450ae2ff1c20ea75c97. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX282084764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2fe1389c73981b3552c5f472f161086183cc1711aa75ea42675bdd41f17c7a. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/FRX282084700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56771d0abbc44c7fa29420ff3438906eee1a7b3620dde761f1dff1a449d3cbd. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FRX282084708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9d7391a008e8a983f5492095547656dbb1bfefab39d80d6606f979ad117860. 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/FRX282084713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71fe115c71a0e91da118b5eca9837f29ddd539ccb1fa85e316f3edc387be2b9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX282084714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41faacaa483ca7a7f1dea745b5a8ade53394192b339a02b6ce45ff309e6b6d5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FRX282084702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c8ec479ff8759c08134d878e003a1fdd9e68690877e96f8e3d929b2888fbea. 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/FRX282079980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e4f1807f3217c7e344a6b4c3206527ca20541826a8084f9e6c641b56ff3fdf. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/FRX762034191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9bae0ce17a60011dc491ddf0d480a88a4a235e23b431039bef97c3ec978e83. 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/DGA072193529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dee6d3fd6135a916cda01525e3cde97295829c2ee61fac1953cb0d1b21e95a4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR59R2127477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cd25d200e98e9ad8b30d01f872d4eb4767eb070836950705b0c087cfe6477c. 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/FRX762197568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbccd422f62d5b144ebc0eb669cdb4c8903195131a308a369c8655ee8c7d61a56. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FR2X42260467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5096200e6e68f73103c8c0c542a2c55890a33824d268dbb7a9bd3f983b631688. 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/DGA082228225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd8671c7352502e13b3420b7c103c5212f6a6bb009fb66d451121e624b76091. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DGA052323415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac62f82a42a8bc13fb69893654910ab0df7e8289bc0da7df0cf904e154d8ee79. 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/DGA072374123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a0f5af7a9fc10e48c60acee90535551760571283c732a1a15c40074f156630. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DGA082305193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cecbc110ed9b0807b13af7b16ba1026f798617b9bfef44288d0c59ab708b16. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:07:48Z), 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/DGA0L2324685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b44ee7d4c7a0a5b6dba31f5c62c122c9d769f7e53bbfd69b7bd576bda949d8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DGA0P2343289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa862b8e1a5109377d985e2cbfb6d63b1a357c11264aeb7f310b8e1027a69e8a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FRX762443764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f795c75ce1748768b9de5e0dca4ff9e0b55d118efbcd1ea47393f8d6c7d4ca. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:01:39Z), 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/DGA082472689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48e55791af075b673d3c5157f7464dc7f3e8d9564a69abccc82ac7b20f602ca. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:31:03Z), 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/DGA0P2440130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f14d7da95c939577b31b150e8e7797fcd50c85656f380df5f09d3762b6f8f68. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DGA0R2490302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4a6234d0b9e327a2c87e31eb229fd8d9b880dde0f544f4137f459aebe66826. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR10S2548304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d8ce70d2e584255824227886c6365f7d757bddf00412fc8dd8b2f7be0d3f43. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:17:03Z), 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/FRX202596081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7466893a59df777fb2244d5b053b34e19c454cda8ffa51cfbeddcbd00efa8c66. 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/FRX452532788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ec8e37cc633b77c22f8c84c8baae749676bc13c4e584f17f00dfff8db6221b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:53:28Z), 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/FRX452577050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdc3e9e7692b8dd0d421241f32c9b627b1448a3cd82ebbd1fe9857154b5e229. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:05:59Z), 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/GBLPF2520017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2f93dca83f3b5cff587323d5140bd21ac9797aee53638afbb27fe9e8f56476. 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/FRX872570256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e5084d1503d019cdf0fc0bbc151e97456b9eb6a6c79c97955d5d1004760789. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FRX872570053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec14f9e363aa0c1226c9c3d0a7b7579dbc3c7d5c13f40bcf752284c62aa9509. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DGA052599149.