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 0x4455ee3a78680c45cbf6094163b8e2585dbe2b1aebf074695d769b1f6a17f25c. 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/fa8a4343-d93e-4428-ac4a-2aa0b0e7f193.json and https://artists.proofprofile.net/proofs/artist/fa8a4343-d93e-4428-ac4a-2aa0b0e7f193.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 0x35e1fe5e18bd86a770f6a78badbe672bdaa678e608eb6d1b1725df9e6f702878. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:25:46Z), 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/GBMA22489635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef935a818c415ad10a53ac5f34942b8e5291986653fb1fd079c9c2713b8e401. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:00:42Z), 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/GBMA22489636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2426238025f857c1053e3922eae2a4b552cf82c90cd242ac2acaaf21c76cd7. 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/GBMA22489638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26397011f08922dcd85e0181cb2c946b400405db36b225ccba825e031b3a9096. 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/GBMA22489639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cc9785153256418deac54816e553282c6bda9f4f9e973505aaf5fd2f00542f. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:38:22Z), 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/GBMA22489640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371bc73d20260e8945f46199ee7929f43a3c6f9af4f7b2b021feb94fde2ea6db. 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/GBMA22489641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8fb6443eb0d702985da13c82a13f5ae47b250be9382ccb1f9c48520cbe19da. 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/GBMA22489642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bb29e7d025adaf897d5a07e074c8d7df08ab5f6831d252bc688b52e6ff1559. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/GBMA22489643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dff34dffa1a414de7a65a895d7d5cb898dd47452f2f2b3b62ecaf4b50c1671d. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:38:50Z), 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/QZHN52542422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752f2a1389c28b563a04d97243f030959b6f40dc8be6a9d6bca84bbf151413ca. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZHN52542428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c33eef530159d32a14e62021e68a43a03683e7a83f15bdb0d25e1dc58766633. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:06:48Z), 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/QZHN52542427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31760ff34a4717721cf7f39e0190db89485f86d5006ff8f9423c3c9ab54c705. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZHN52542426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155259bf7d4737618473408e8542afba31d6fa0ba05ec5e1aaa7174fa15a7703. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZHN72525061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759e4cd1ac525e4d4c1016ae2bf24d7d5a2ce41bdbdb14ba36de80b5f1ae7c47. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZHN72525063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7689cb79a184da1815d18da225b056e409dbea75c5692e82c2d9b4fa7c95616. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZHN72525064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe112337af3eaba61d023ede33fc417e23d7549cd624a2c10d2205ded2bb4be9. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:52:07Z), 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/QZHN72525065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5eb02d939e537a89eb7c54c57341c25f5ae66e441748627bdbf7c32ae06146. 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/GX3Q92526151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611368fa4e34a76ee154c9072c7ef24f7dcbb85fb3ef63dcb41cb48b71009223. 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/GX3Q92525891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc73d8532bc24d7c9a25a67487dcacbad3fc6d9cb505348c9eb491aadfb05d83. 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/GX3Q92525892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac2c02f4481e1c9c80eab5cb1b884d326e452c85bb9e401352a513fae194bb0. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/GX3Q92525893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588d1281f6fb9ed8234817e8ea0f37cd92a1c61349de4e3498a09e4e2d842ae4. 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/GX3Q92525894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cd68113cb30ce5ed9e660342bd241edf871e855e2e3d06ff0f3cd67f06fba8. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/GX3Q92525895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf76335b9a49052d88b37c1893cb51e37217e12f9f67bfcefbd50cd2b3c3667e. 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/GX3Q92525896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6bd95faa29ef2d11bc153989c59ef9732e24984e691c1482cd7ebcf97b7631. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/GX3Q92525897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f156ea30e7d3a57dfe6daa49430940e62ce5ca38c1595b219d0b3590a75943e. 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/GX3Q92525898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427825b0bb768123ae34d2dabe443c141d01c6f50d078c63799194597298b841. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GX3Q92525900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2d9b400f2897f13a3f40dbe6a00449d6baa49db37b362cda54ea528b837916. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/QZK6N2527647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b478bee41416574d182556cf48eff6f74847de6d1f7a257499ade7e79d9d323. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GX3Q92596404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd20f8444f42e7d147de8697cf5d4e936b2e14aa7a2bb666b225dc35ecacee78. 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/GX3Q92596407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c067507f06338575b15075860aacee2f5b5035deeb5554e95331856eb2c1a7a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GX3Q92596408.