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 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 0xa8696b3cff60fe7e23b802c108abe5f4251b84f6630bef94b0a03c1065f65f51. 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/78b7f7d4-333c-405e-b05c-b084fe5db6cf.json and https://artists.proofprofile.net/proofs/artist/78b7f7d4-333c-405e-b05c-b084fe5db6cf.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 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 0x1c0902237047c5f4d3944c0b69b1d57eb7da1358a53e92cfc9b81c1f8606a0ff. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/GBSMU5295560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8096bc3cb40356079ea6fca684d2fcf9bb636aeb8a3f291e1b45ea208ad07660. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/GBSMU6288606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43816874ceaa07e2a168240c3a6235921ed1d343aca2e5bd2ac58b6c7bb94441. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBSMU7402618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf5f1bded6b477892a6f12029767c3735b088be56db317377402f0141b30b47. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GBSMU7402619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ff0ab3433be337925c62e9a2e7fc2a3d9e3a8b073f3fca0314a49bbc41ab21. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GBSMU7402620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53b23a4ef44c97e538746f5146550e9a06363d40ab285a93fd882d9467d0008. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/GBSMU9134135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe808b061180457d05b80dd403a6cfe4447e74441288ca9a0c0ae3f4b34635e4. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/GBSMU9134136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99bd418de8ce256772c488d4845050282e2c1f1a6f8f92d414375d726920405. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBSMU9134137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e768ff79c3e332cce46f0cbfa3d3520684a50d5b9c91dc1d19ca117a1b34e3d. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GBSMU9134139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c5c12dbbce03d5779f90f16a3f85c71c4da6b28ad732a34b6cb739f09cd001. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/GBSMU0054282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a303afa326269ef28ba9e6ded3c6b45d44c693d0f4a94faab952cff62005480. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBSMU0054283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ad30d5b71c0a68ab5653eabebe8684016c8556ef21dd02d575b8b78901baeb. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/GBSMU0054286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b4b2d224735331e92297d6643e113cecb9b1460521d7d6c80983b724152938. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GX4R52362348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4002f38158d20b014e81dc84804fce4973ff813456794883290274528ea1201. 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/GX4R52322162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ea590ade661c32961d457fc831ab0eec4c73334b5fd17856c4e16fb594ab10. 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/GXESV2470448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7e00994f4f0b64830d34d6ee538c9b93e4fe1a23cbeb38f2f5a31ca052b4a8. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/GXESV2459529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fdf7781958f3b70cc3e15b0d8d00c8c451fa2da3f4995175c7f9c9576b8791. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GXESV2451741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fdf7781958f3b70cc3e15b0d8d00c8c451fa2da3f4995175c7f9c9576b8791. 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/GXESV2451741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b600e6eec59d9f4169ea8b8dd092989160211482e469020149b4525372e463. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/SE6XW2572888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc22d58d00fcfb773ac064002d32647903ce79340087849eb7ade24a1b56502. 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/SE6SA2598242.
Songs They Forgot to Write in the 80S: Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aff551d91a9e7c10764440139e6d1d2419b398011593bc08b12d5fcfcd3a5a7. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/US7VG2578096.