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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1468c8f55e6c59115405644dc7f3de30d5f221d1fa7d9bbeb2ad404c3ce219a8. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZMHL2065763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc158abdcbe9aad718bc26b1047d5370df4b4bf7bd1f95b8752bec6fc5559bfac. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZMHK2093366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce60461037f26ea1a098402435441689424be1e803ecdedeefc856cf96eb89af. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZMHN2059889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc554ba884be5e585980ca692f5778e20eb8733ba23d5eb4456094cba7a90c15b. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZMHL2094864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0eef704ab80c1b9bb208d135e2fb263220b17a9decff5262713877ac22db321. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZMHM2057235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe21649a054065f056997979d9ad6e02b650800861a086714751ac6409dfa304. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZMHP2037763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840f6aa9fb9e74aed2859cbb1d66b6bf2376d95fcf9dfb8d16f240c1171f1f3c. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZMHM2058945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3532faa6d36b000b1dd8243e66e53b14fde174f2096a28870f4d45ad4911e827. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZMHM2073471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56252991593934bf5f41ca2dee3cf7677433d6df79af1dc6cd8f92a6c00518f3. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZS632270795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61d9a1f9456df8c95d8b402f10a4122eb7a2792e8ef20988422df2119455759. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QZS632294876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30fbc87ce7fec04f2958ee3b6961cb5b39cda6897f5fa285dc86524399087d6. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/QZMHK2276558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc57f0dc6135ac9a8c5367168b8cb7b81a39c599ce00e9e99b2518fcfb1a6c8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZKDK2207383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517afa0155dfeb1be0c13eccf9a574cb4112e6370d6d4ef5dd78ce00335f2229. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZS632180918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d34fe9796894c11329bc164a1c02dbf5c82041ac386c656e3a995595b84646. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZS642148781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6db7f0ebc7db92c43b99281264a92ce8edf033e84e9297afb3fab10911724c7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZS662120014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a7e70833e5a138b4e6d590131ef7155813154a135953e646e2fcaefb0772cf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZS652198973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908bd0bacc5ff0cae8202b81f3fec5afc9aefb324b1be099d8e27142d4c55c17. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZS632103081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b4fcbd3cd735fdf4156b89759bcfa5b633b414e7b9dc5596ecb361fe6cbdb2. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QM42K2582957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e4aeec9fcbb03ed5bd63c37a6f55f6262ede544e6e3701cf3910fd968a7902. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZMHL2430575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b79fb770ad3e75dd4e1a8a29929c838801096b3be0e58cf6563ff17ca84d360. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZMHN2440281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735234059922bb3ebf9f6c5c4cda5c1e877c69a25bb65e46c4acd20afce4266c. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZS652174745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6f5fb5ffee8c03ecf254ac3ab7f56a053ca3052fe434326fe178da33ec2495. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKPL1826458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab982ff4bbc6305f3279fad95e9af0bbfdfe97b4bbc8371a1fde542b19111a0d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM24S1842144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a665e065302fe14940a0ade099fdb8c3ad39c0fb99ebf545322c86668d6d1c9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZC5P1800196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c217ffac44f4dbff27ffd87b816ca4492fc9e5a94e309aa0279a5a85f969d0. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZ5FN1769912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d009ac99a04d6b4cce3d0c6a98feb7ca999402c93cb35a24868c4dfcf3a70d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZ5FN1769932.