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 0x02e01513d85e6019616d1afc2e088b6e07c5ae8c18965f66e90a13dd691fc3db. 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/d2a67fda-51b4-45fe-a404-2ce6639b28fe.json and https://artists.proofprofile.net/proofs/artist/d2a67fda-51b4-45fe-a404-2ce6639b28fe.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 0x35141ad4d17805502caf6917856a9f5c8b1417f7daf731e6c26eb15bafc109ca. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ES71G1930664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3693448f30dfb11de22210648ed6b2f8061c7822408b85dedd313342ffd2561d. 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/ES71G1934373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7862dbb478aa81c3e3fa3b3d15989cef00a933a3be6820d86ddf4748bae905. 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/ES71G1938979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d0858fe2f8258af89264417e80b3fa8630563d89cd0635fe207365e5b5a938. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ES71G1946991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7699149da834ca07b7f0e9d8f7fab4abc763020fc4029bbfaa632d28d9c26630. 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/ES71G2027483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c189f1ee890e6057f92d3c8f5484ed125de515956e649287af80bb896e8286. 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/ES71G2059295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0d29c3a04d9d4b909a778deb77f9dec96df2c2a8642542c160a8183325b5bd. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/ES71G2104046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24dd81fd3f38b540386d117776d60597588d50c660596fd15831202c4dcf14eb. 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/ES71G2124818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11be323768391ba67062012428c227e22528f0101572572a345c44fed58a3dd. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/ES71G2133775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6fc16ea60a40ec4cd3276aeb16b021b1e6f13d6f25c72bd360ed42e63a8734. 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/ES71G2132813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4455d7094e12567b110de0fd93aaeb4dca028b7993cb801fbe5cd336c42f8b. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ES71G2136103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d05b83dd61e86c882e70b2745f816b0ab1891321641de4e3b64275ba292144. 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/ES71G2137593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2919605b1cd70d808a06b89849fbf4cc1e4cb3ed0146c45b9a4ba19db3411a. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:54:16Z), 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/ES71G2140067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6db1a51ffdb88ab57889646619124a5f715179152f44fd00089facf32d4d921. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/ES71G2139155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb05110008100adeb747a9dbb70ff26b1b29244fe8e2feaff7357c4209d7fda. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:40:50Z), 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/QZTPX2431257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3f8608dcb9852cb0fc5126da645891e989c4ddf3e62af69d694f67f29b1861. 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/QZW9L2447439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83e15f6761e862660953f01bfa29b90e3f1cc2d2c34f2f5812b61c2d28535f4. 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/QZW9L2453270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbdb435674269d6a9e2c8d857478b1778a416ebded232e119cb1236db15c3e0. 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/QZGLS2526296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f48a0e3d770ffe8273af4e80623ef5f1dfc7ab67ccaf2f12b272d4dc7878973. 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/QZGLS2520802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b3ec90a0d6579a3bca02291bd1bb3c79f6cc6e40334722bee24449a428283e. 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/QZGLS2520816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1c941ee9f9e39f5ab0578dade6a77c09c0d9c27c45a74b8f37310c9df77526. 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/QZGLS2520795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eeb177741d0e4ce558d42c8f859ee663f6b8b735d53ed3627d67eb70572a66d. 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/QZGLS2520794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7163e2da9ed87195af9f751d4aa51859f7fa7e32fe6d1554f155702375816ffe. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZNWU2596796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846a1e247e970ecf8f8719dcfe0b4e79ac80082e65ea099cf460c74a4f0a8da8. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZNJW2548066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29c665c1c2a222d2f93b4e04b51fad90c1e762ebc831bff08ef2cb0c8edfe5a. 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/QZNJW2548076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f82e98d95cf6f0b32b47b1bafa6c39bdce001c694744ea3e8a894127f05e3b5. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZNJW2548069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3a4036ac4ca4655c341148c17eb81df63288db573f7ab683e21ded5a39d03d. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/QZNJW2548068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a20f9eea4aacc090f24bc5d367f45b03d70b3c50389dd09658e20e6ec7fded. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZNJY2595574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0172d3ec1b28d2aa7efd5d5983c8ff9605acaecabe35fcce05d62d750bdf8861. 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/QZNJV2590174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115522a3f6521b370624a9235afa6cca4111abbf2047d0acd9d66d2f78ed477b. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:27:44Z), 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/QZNJV2589879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51a0518ed85b160377664a3d287088c31fbeeaf519f7a0ad3145045b2f504ec. 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/QZNJV2590177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ba3dc49e4549c003b0678f807b4d376d73421957ffac86b717ca923544decf. 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/QZNJV2589955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eaa502a09f97644f84b940cda7a4f9cf6171169d7e74862d93e17cd7eac6ab8. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZNJV2590187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2616a6b3a021a78e7f219f5339cbbd267ef21fe3b793de51d6f09b4de850bd4. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:55:33Z), 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/QZNJV2590166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda544a5a34d1c47b6d4a88386191a7158f03d31f14e8d6f5809a46f1dcaf5cce. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZNJW2548062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11583efddc6230a04991821b6f77f30010ea5d7f8e7ddd9a4ada23d5e4c66bd. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:44:31Z), 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/QZNJW2565144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3824018c5a7563530bd6d530361c7448dc7b9ed01d6407e611c0bd0d1e5f8d1d. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:51:03Z), 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/QZNJZ2551489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da5a41beb96a46197664ba3ca0827635b1e5df0afc92f8184412617a26f1f3f. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T14:59:31Z), 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/QZNJZ2559534.