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 0x82d47c432bebf7b33c8626d86acaaaa09418494f94c2576e02ab5a584a05ab6c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR59R2386531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda2e4b996a90bb99a7d531c992760e63a250a188df3c811f22968842cfd9d0d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR59R2386532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d7929c2df7d3e7f6527ad54f17397c31233577249e8cd70525108545015c50. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR59R2386533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90206e219094783d842019516cb15500275b344a1fa45b006305c5bb4e650a8f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR59R2386534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7573c2345e20a1fde05628349391d92a4ee810b1554afeefa0ccbf37bda0b4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR59R2386535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bad549fb14efbff82e47781593da78569e80078c7c68291818ebe7b500016bb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR59R2386536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5df2f0410bf248b389a34819355a8b108c087a0912a1ddb46e1763d044a60a. 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/FR59R2386537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84339e3b3325cf6c03c9eb22a6a4946e5f24c58ff04eba679f8b458bb92bf28. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR59R2386540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405cf4613068952ac83774b688be5edc7db38d203cdc9290efafee22cc543e6b. 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/HKG732281597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5dc813f9e4d49845b08cba3b6968f550fbe87c33aaf6a98bae5f611032025e9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/HKG732281599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b324b938df83d2810694bb045bca8cd2e708bfa50fcc6ddf4bca06bd63c89a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKG731713494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4edd44afa469659cfaea69d2c95b4c5299488eef9ecf6eed4a20523b8706ff. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/HKG732281548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ec02b89b6faf7fceec8a9b586a38406121abc483e099a1741d42828b70ec8b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/HKG732281552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fb31b18084a1f6f7e45b7869c060cfe6107f86f281589804f65e1193aa8c60. 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/HKF891217671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01f51bfff470289cf636194dba12c8dc11e9eef1a882c62ed608cb0726103e4. 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/HKF891217677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a11c3a8e59ed650c7b5173a978ff3d61d42f3a9bc1add8980a7793b0542a72. 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/CNA231400486.