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 0xa7505d07c946c134d71335efbd68688951e36d517258693818639f79b119195a. 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/19e8819b-8fce-4bcc-9a85-aa3cc45e0dc0.json and https://artists.proofprofile.net/proofs/artist/19e8819b-8fce-4bcc-9a85-aa3cc45e0dc0.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 0xf934fcbb875dbf3fe759b06910bfe410e8a56aa117763e93898abc91bae6074b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RUB731594846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52edbfc34187e326f570c074d8eeee6ad4be06748e20503f60b6e6531c49a6e8. 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/RUB731594840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37facd3a6d2d9ab5e8161994eb33bc4830100b86d3f6ed9927b33ba35299d9a4. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/RUB731594860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6808870d2976b578d2557cf4e4a1bad5d15e65a230e67131c8b26d4b8c831e21. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/RUB731598430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162baba20cec5aa946650730b4093a90c6728107b70fcf11b96846f6d3888c68. 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/RUB731597601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf856139eccd266e94afb95567a231895f64b337cf2bde62029f5c776298d6360. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/RUB732017762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda14ac9d5936b5ece03094fce4fc70824050f905f76f2ea67ce223209c6643e7. 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/RUB732010729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f99d98039db5efefd0d681149f266ff181a37971c1197ac95ebb048cbe5c76. 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/RUB731598864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea385d2aac92dedc911f773e1437ff7fad14758e19874bac9028684bd8480771. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/UKR6V2090792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e51241a8855329269b95b49afcef60e71f268a8b78312eb55124fead40f252f. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/UKR6V2091256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda14ac9d5936b5ece03094fce4fc70824050f905f76f2ea67ce223209c6643e7. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/RUB732010729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd835a3a0fc64e8f0c0c1bac4091b872d2dfb5c865b3ded7a9d7c341d520906ea. 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/UKR6V2092412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86601e8d389dd9df7fbc930b1c02d0a03756bb704453c6a813e568defd9ea64. 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/UKR6V2190026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa33c072498708fb608dde533d9b932e82417a77f1e96ce911e0ca702c34b1c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:02:18Z), 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/RUA1D2117039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed8845266d549aa9edfddcdc51c8c9cdb6a120641979b1fb6843d1ea986990a. 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/RUA1D2126081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d3e35edebc80119ebf76fdedc2a9c4f4d0f2d92bdc4e39746d19df87038172. 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/RUA1D2159332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c44a7a81a158ad6c7d7b101d2d872dc68c6e7a8f574a892cb24cb55ffa2902. 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/RUB731595453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25942e31c2bc663b1b6fa1747dbfdadd31817e914dd094d729d907d93fffe3ee. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/RUB731594258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286291614df42abbde4bc1cf075316065ce7f5ada8d448762fd90b747c908a6f. 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/RUB731594186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d42fc1671dda6679d9dc945c78e6e7da6122eddd195cea9f65e7a67b5a489dd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/RUB731594178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7311c0190701e05ee405580031ce65226860b4d111268864e60bbf5b3dda7029. 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/RUB731594180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce230544d77edd4f3229a6d6a72e4a5f1b4baaab12bc04e3910f5abd982e92a. 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/RUB731594238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4841c8e629af968f0c161cd92dfa39e9709d604559dd8d8618d8f21bf2fd7b42. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/RUB731594172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce061265c61ab578f1a28e31c012a63efb2ae994f684180cd5eea68b2e514f76. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUA1D2388092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb343f99119b232820f2ad5d9a497690b0d281151a0b38ff8b584c44f2dde4e28. 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/RUAGT2373294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99022a19b25c55a391183b66415f31e234db1ff800080daa1a81dada74b49cd8. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/RUB732067050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd85e36c8cba40d6c5fb072422d5dae5c12f8bc36b98da4a39ba7d5fb27c2c6. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:08:36Z), 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/RUB732064487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472244e2abcce8848cb05e457b7b0a91c1a9c6ee8812a672886e474e7baedd16. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:15:41Z), 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/RUB732067054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca8e4cee5660642735c1da19fb1fcf20895eeead0d6b25135acbccb8cf5b690. 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/RUAGT2438304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fbd5696dd05da19e5a43275b0d7120d7dc46c8d31c196326ee905357fa23d1. 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/RUAGT2480758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31824883cbe47a53927546fe918704d673b40b44da31008160c3d238b46c6b51. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/RUB732071356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ba1339d52efd076560a2466af92addf38f695528ee7a1d854241d26a517d48. 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/RUA1D2551885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d39eddffd257a5f2f91225fac90e804f3fed89dc6229c431f0682b10947a18d. 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/RUA1D2591152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658ee31641306adc1b992827c05f9e9cf243b492b4204380d5fba1f1b2626ade. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:45:53Z), 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/RUB732072466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cd1e1d0b9cf80758b225454149d78b767a133d59f4d3350f58bcc271a24d18. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/RUB732072464.