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 0x6e5c7b58fb4ab55dee0788fbaeb0d7b3403185f6d0f85b838595de463f859e80. 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/537716c0-9d0c-4255-a47a-a2c4fb1872e8.json and https://artists.proofprofile.net/proofs/artist/537716c0-9d0c-4255-a47a-a2c4fb1872e8.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 0x27f4e3aa82725a6a6d7d2ab8a6bbee78dac2b7d77297aac48443bbdff7babb9c. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/USHM91438316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5af70edd190bfaf2821096249f1ebf49d80bf09d1412040ac1fe55ddebbec5. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USHM91438317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb961ae7254affe27b5bd982149ead67c67ff35e804ad238129d06666a1fb93fb. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:01:53Z), 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/USHM91438310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61759fb63481b09c5108a07b241970c336e352bba5ee3de5aa85d8afd548be96. 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/USDY41570761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe1b913caef7812011f908d1e50d0bbf981cc34dc3c7ca6035ab720e0c780a4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:27:22Z), 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/USHM81662720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2e5ca5447ea134a7862ac4368d12f028901125f1418ceef92cf8e80644baf1. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USHM81662721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7696060b16985fc8bb78678d69ee50e99998545e3283ef4fb968518d7908c0d. 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/USHM81662728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fafe085b78d62b33a287fcc83eb586b216c06d31ceb343d6852fc8e0662c806. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:33:57Z), 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/USHM81662729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6547c176b91cd4361389bbca7960ea8f721631462f5f5376a2372547907d53. 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/USCGH1821854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f7f306ab964c0bfd03802a38b280bb74bf9b8bec47f8c2772eddb9e451045a. 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/USCGH1821855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850cc4ab98b0ca90803a645b95a798e04c9c7aac7ff10b57847a348414785121. 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/USCGH1821857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e2a90057450d1a4a4d4b3687378b881caa1256220bb47f12acc732593864c5. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USCGH1821858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aaaf90b2b712aca14c0b62e2689491a84a9c96e7050d10550e35c28ba06f026. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USCGH1821859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4f389e9e9c3c867857c0c5e0caa2cbb8a86eb534257999d661322f2b549e60. 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/USCGH1821860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e193b5aebbdb1e64df3c8c2085baf33e112848c60f7a65c11d9217c258cabb. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/USCGH1821861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cd5ac2282cd04aa22868f04cae2dc247a0d6ba281f8be481e9d22918babcc3. 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/USL4R1814022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0744b31ae7ed3d8d451d3677f02bf9117e4161a7a1425218e62ffe51d20e3e04. 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/USL4R1814026.