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 0x5b027a8da1713510696ef740e34dee6fb85cd5b8cd9c5a3938bc8f7c481f866f. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30a81852-a297-4c91-b707-5f0ee9e69153.json and https://artists.proofprofile.net/proofs/artist/30a81852-a297-4c91-b707-5f0ee9e69153.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 0x2531703a79114593e1bf4ed85559df934cdd2f19499aea20e0905edb63d7b48c. 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/QZHN72206342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad16a079dd9e3821055d646fcb7671a3ecb425c9ee80360959500a15aaadec0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN72206344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd41a9c6eed97d7ca9d1d2fab05cc99d0a026e3edc4358e5eed85706830a1957. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:33:41Z), 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/QZHN72206359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef22d42af78edeeaf12c15aa87469a7a9dc5e33326f8fe55a772d2412e01d55. 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/QZHN72206360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f669be1552ce739fabd497f71ef285faa08fdcf16869cde5554eae7a92321b. 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/SEYOK2320902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f83384becefdc428186cf13fce56a9cfbce347129cf9f92d3794a191caf4725. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:30:28Z), 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/SEYOK2320905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ef0ea5df7da657970f903be221851ff1dfe6afe54a0cc3f2510169be44b976. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/SEYOK2320895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028a7f191d19ef0d879148a04a97384b0ab9d7e7049574305a8f1b8b6cb9dada. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:56:14Z), 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/SEYOK2320897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c6651074e0bb1eed69284342b1ca912d591fdfb6ad64694bdcde47d41293cb. 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/SEYOK2320898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd111b9573cb821930ba241ec243599758e303ca32458219f765bc792da2115f7. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:19:54Z), 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/SEYOK2320899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad447149f0c11e641d14f709d4546212b2f5a9cc9bc8a6dc30ca08bee9f8f63. 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/SEYOK2320894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718f22584e93047319cd7c197e8d65d9a0eb675cb80bd3c35a73a7abaac0479d. 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/SEYOK2320890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4b28da679f6410c3b2c49550e24676ffb1f360cde98f4688e8c4e567ca9bb7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SEYOK2320891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58cd87f3ac2174d2474c2b4663be16f4e89041b40c4a79edf9f781ba12dbfc3. 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/SEYOK2320896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4450e0adc715c1d3434a6862dc81f7eb35f73de0a5ca685964410075a33d6f17. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/SEYOK2320888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85995669c694bce0fc828ef297c9e0aade2ad0ab340cb6e734874051e23b6271. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SEYOK2320889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f33767f29c0876d986f56f840c06edc4ebe9cdd06c44d2a9953f5c10bf994e. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T08:35:35Z), 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/SEYOK2320901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebcbd4ae35b281aebb43006ba14b60c39268b96d0dd5d7b4cd94f2df314ae7c. 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/SEYOK2320893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724e5d8dd8c7f31565652e37feb22c37c517fff906e171afd0ad9fd1bc4f0881. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:39:59Z), 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/SEYOK2320892.