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 0x18977e63bfcf3c87507b89591ec8976d9aa20e221b2fbe14b9c8f678c6a31edd. 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/d5a13801-b346-4702-824d-8edf3e7580f8.json and https://artists.proofprofile.net/proofs/artist/d5a13801-b346-4702-824d-8edf3e7580f8.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 0xada83981f27addae18b3dcadf05b636fe475e9b2cba968e30b5370745b818112. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/JPB602096458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4e3be422dd427f002e688bd3a02aa94a8238c80a7596b286750cf210e8a320. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:24:12Z), 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/JPB602096459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f743ccae2777ad8940d4312a9a5456c6a5a866362d91957d242793a9c355b8. 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/JPB602096462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77d23638554b35a9c7c7337546f47fcaa6aa762a4c1579afe62ef3cccf6d706. 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/JPB602096466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1e0458ecc12d885a612a2be70428285a86555a4676fcdfdacf4a67593e9fa4. 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/JPB602096778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3609b15cbcfe430a05bc907b08ab703d30a5d5f9305f2fdfcf1c5508dea0ff0. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:17:35Z), 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/JPB602096780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d57152b200213891b8a10a32163e9bf3f2b3315bee096c430de6e99b80d2b4. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T05:03:22Z), 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/JPB602152668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5053a3b9fd6931295c0e9eaa425237d902164bf96178c2c99f231600e4eea7f. 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/JPB602156981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759e4274e02859ddfdd849e66f3d0415b07e44ec89186e9185bac9f967e587b2. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T03:55:50Z), 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/JPB602166785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd906d5549b39002b382a566105b771a823d0c6d216e50565875e8ed705decbbd. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T06:30:46Z), 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/JPB602167967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf45b5840c821f8aeba3aee6c9635f757a055fc8bde7ca27cf37527208213ab1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPB602170074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00801e8709a4813842cf33fc7329d14929fcf068d13528bc1640fb217d4e4bb. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/JPB602175027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee966abdd85da8f117f426cdcf0740ad051bdf2b8de34f9868e95f4a66f30ff. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/JPB602198389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1fff730a0af769bd0821aacceb067a43d8ff7c12e02a24a3ad1ac9f2320463. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JP92N2205010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5090785318b208561b26b357245b60ac936ea26688556173dafe9119dbe2d04. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:36:35Z), 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/JP92N2221647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa387368d164a4566c88abd17a5ca6f8a3eeded592e091cdef883b2f753f5c7f9. 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/JP92N2232308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5ca0de9f72b83cc6fbe5fa6e6c2283d357fee3cb82860042f3c84439067007. 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/JP92N2236277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d030c2c22fca1e6b7829afe96e872b4c2e3437182dbcd786c1d51ff5fb19484. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JP92N2239496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560eed54aba80c59232188dad2033f51fb26dbf36401be1db62fef39ff4b6a46. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:51:57Z), 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/JP92N2271855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992d02d74a5081ebe03faf22f7f513ad28f006d56eae816e78d64cf398a423fe. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:39:39Z), 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/JP92N2277003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6e84f38048eefe5164872eaa4d6f08efb566f051e6f3883210eaef12219f73. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/JP92N2302585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a92ab81b8d893e26705420d6caf2496d75c5aa1da2ef1f3f8fb2b3a8fb1e24. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:28:04Z), 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/JP92N2282550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394d43beb8ed1996268306247d9065b6ff1c98cfe17dfacc80fab5032e070116. 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/JP92N2309778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9781683c14d94bae7526999cd073f1254a3aca499ddd0ad7f09a318ccdf64774. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JP92N2320724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf077a88c18902ddac2d91cb4faa6bbe6e7574587f01c148110d19d7d49e0d64. 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/JP92N2358977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f07eb840223db95d0196d9a1a399aef9b328a41c14fcd61262ea9e6116473f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:35Z), 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/JP92N2379827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c4d95ed620187acef157640502a406f674c9771c77707add91afd8e504a6c6. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:09:20Z), 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/JP92N2385824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0c9fe0acccbe3b5781786a5a91245adf9231b006ff3ac4bf96a37c8fe917e3. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:27:54Z), 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/JP92N2402715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a577e6b0ec8bf7f0977b19470bcaedcd5c5767a9357492e5914dde180680a42. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T21:01:01Z), 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/JP92N2406811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fdef461620c8d60734a2dc492e9b872764f108b1d7f1ab30449afbdf303ac3. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/JP92N2415162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed9da85a14303621ab9269cf2e763caaa5a2119a7a07bf476f0f58e202c521b. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/JP92N2429559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace38ef915635574b2f67758e4972cda7faaa547113a33f30f06f4ed4cdf2368. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JP92N2444399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552fd87ebd5993aa361343725167c64e37bf46ef60b54c4bbeae6317ca3ec1fc. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:39:46Z), 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/JP92N2457631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ea6b02eff7a44d27e9aeb659678cf32b13fee96956f6a727968acb50d3360b. 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/JP92N2505541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb19308bd271bdfe4880eb6ee4590785a797778af4db0bda6ec32b028e188de9. 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/JP92N2419463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed9da85a14303621ab9269cf2e763caaa5a2119a7a07bf476f0f58e202c521b. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:34:04Z), 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/JP92N2429559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace38ef915635574b2f67758e4972cda7faaa547113a33f30f06f4ed4cdf2368. 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/JP92N2444399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552fd87ebd5993aa361343725167c64e37bf46ef60b54c4bbeae6317ca3ec1fc. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:06:17Z), 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/JP92N2457631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ea6b02eff7a44d27e9aeb659678cf32b13fee96956f6a727968acb50d3360b. 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/JP92N2505541.