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 0xcde3e404d78c3a2563e7d9c810b6ef32a0589c907129305086df597f76a38e31. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e90148e5-db37-4f6f-81fe-1147ad39dae4.json and https://artists.proofprofile.net/proofs/artist/e90148e5-db37-4f6f-81fe-1147ad39dae4.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 0x71a60e4c2fc3433aed0875fc8406ab3763eee633eade1a4afd5276c7c08f47f2. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:05:00Z), 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/QZWFL2402482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54cafff8ed4d0298eeff296a5c105dd9fa86f2a9b582a0d682ed2a576f5c2d17. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZWFL2461679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08e3732451732419a488c220fe4608c4bd918c85a679f52d2373f023fb54193. 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/QZWFL2461667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3321a373fa65fea05a8fbf74503e1bb0442e51f2c51ec5eb0184896df993c5. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZWFL2456788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af391ecdef2ad72a1f7e0992e10a62ff9e6c9be45118e2fceac6d1b3d98409e. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZWFL2461674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3dd553487bd42e21f2781f2bb32104fcc0856de5a084ea20fcefd408f939fdb. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZWFL2461678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e007f8ef62b6b40bc866735d86d3fa297760ae80f5b7a8756e73773756f78f. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZWFN2456252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150f357c3114b864d560a9018e225dc6fd49eafe64a9ec1b173fc8ad370c8af2. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZWFN2453530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12c1f48f27517469e847e5483a3561fb5038327ba4b352f43bec1919e3b54be. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZWFN2456268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10be44bad082931043a2af627917604578369ccc3c11f38ec7f1e4c7d12d0e9. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZWFN2456246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07603566895d256d602cb354a9d944b179d874912a630673b6a212552014bdf. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZWFN2456291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fefa6c222d7da3ec04e404ffbf70e3b1a79b0593779404400dc0f492301ad1a. 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/QZWFQ2445213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7045e16440bff9846b7961faa9c56eba37b5dff0e707b0efdc1aff9bf62d0ca. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZWFQ2445198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e11ef099dcfb141f45f31cde47ea0ffe0f0f883b9bf15527317269b80d2c043. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZWFQ2445212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa417d964d7c41f9acf6781badf3f214fc68f48870a157a7f908906f75dacbe1b. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZWFQ2442533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9126cd04c1d7c4b54a3db261adf00e5b687d4b269e66b5cbd92aad940cb1825. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZWFQ2442509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb328c244806e31e5d18ea2a489337ef24dc68457b509ac5c1c312206895bb387. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZWFR2486643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075b11bf92391cce890115b2c2a80548bcc8eb5821c5e04592f77ccb06274323. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZWFR2486647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8546e96f82d514609d04d84fce5a9d58c8e9d29ff0180fd477677902fc3bd21. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZWFR2486644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cca0cdfa0b6b108b7e44ea2626adb9c1839a6752619363ce614e17171961dc6. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZWFR2486645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67104aefe2b6a54c6e34c0eb0abf33be0ac71aee9359344993bdd53224c82939. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZWFR2482689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9d668f014ce52435d65f373d3c212d5822a390f38af8a0335ec6565a705859. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZWFU2405675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb937be7e837ff5cc93207198e08d1a112c59589395e818288f64d83f50ad87. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZWFU2405791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4596c2d56b747416f8893a5ad726bd4963f024bfd1f889b50995d4b10a86ef24. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZWFU2405606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5286dbfe53fa659af4f5a300cd201c4680c9b5aa642d17e6f5e34616e0e67ccb. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/QZWFU2405797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4209e2930a0aa46a7ee5260c9225b15758591de4c3a0df576e2a5c1e5a1a48. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZWFU2405793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf507ebb47e36b142c3d8a48e004352dc6038b54c17a030a5e06a144275282ce0. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:26:03Z), 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/QZWFV2441276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c30dfcf41c4fcc8521c1c641a809db62400c894e1f0cd24259280895d60e44. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZWFV2441277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ab014a22ddbc171475b918523182c7ccdb3b5b3ca04400b08ad3986fe5d383. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZWFV2439338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf7ea1a8dbb45602c2193cec34618a607e553daeb9b6bcef531503e6b6eaaa3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWFV2439205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67d072a32e0ed61e229bd18a78ce19bbdc97837051de7d85be0a143d8ec0518. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZWFV2441281.