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 0x96ce62f5d2c0032b405cad91f966101db777c3f290b830ceca46ffe083112838. 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/14202f85-d769-4a2b-884d-ba45aa956036.json and https://artists.proofprofile.net/proofs/artist/14202f85-d769-4a2b-884d-ba45aa956036.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 0xf79d77776f96d24b9bb8ea58931d9b19291b996c3d561f375b2ded87d226ddfc. 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/ITP842000078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc886e0b9e01c00e345b699a9701acb65d057e88a8c71765c6d8338d005cebcb1. 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/ITP842000085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292361553f117d9e613819d4b4d2531a517164d3300622012712f7bcab4a3b5c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITK210900086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94460ea6fb562d35cad79b501fe4ddf2ff5608c38f255f4a36229ede07e21640. 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/ITK210900087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d76678afaf26f5639ea3f5a63b79196776b002fb460d16da0d3cccf671b0c86. 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/ITK210900091.
E poi vienimi a dire che questo amore non è grande come il cielo sopra di noi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba431a0d8582db66d0b671efd12b6b50e55aff110f4122862048b2911b5595f. 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/ITK210900094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536766c0456b4aeaedea739c6b5f6efa96fcb2fdddc23ac19bacc711bf76f18f. 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/ITK210900097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbae0686ed82e2979d41b77c605163d07141fccd7b0f671f354f2e96683d780. 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/ITK210800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574235eca4bbc5e7a170182712d2ee2f51cbe2c9b07ed69a3cc21bf4735d864d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITK210800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4447a7920acf98ad2bae5fff8a4953776a19cf45cdcd4c88c5d54eb182e0952. 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/ITK210800045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55d617e5b3daee294fedd5d16fb9b6ab5cb5a9a393c2d8aa496a34b1eac78ec. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR6V80608622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5a4c5abf96d9b023dbaad544b89651f20819bdd658748f012d4e0824be7d99. 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/IT7500100130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92e98fad748670c4df7560657b196af2a56c4bfb91196815a34ad8fb8c55692. 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/IT7509900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017710ebf739ef563c785d242231955564f19c840f88609f85c7180f656d27bb. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/IT7509900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548fb541f1f07a66fb1569602751a6df6442d49fdce99f5f2f25d61bad7e6eee. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IT7509900070.
Best Of E-Taly - La Compilation Digitale Ufficiale Del Mei 2006
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af5a8a121f8ca603e4dd765d3486352f4e1f50e68174549b6097a69890a2309. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR6V80613391.
50 Rock Tunes, Vol. 1 (Selected By Believe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe629be7bcb69ba4e16f8abf545019d927422406f5bc27afff1dbee227203009e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR6V80411010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1250e4fd88d339fd39e94e3e0af5d74c345d5d99184ca53485b1f629e57d7b. 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/FR6V80700251.
Mio fratellino ha scoperto il rock'n'roll
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8f9dc7173d2879728944e8c1285df1a43f1c1f5430e997e3a2d87e8cfce108. 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/FR6V80700252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0017081dc0c77276ca70018a5c058c6e99117786e6dca8d43d87d2e1f27830. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR6V80608241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954433a18fb715ccce3414e26c4d781e7bd1df64cbf5424e72ace6c0bc7a358d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEBL61097466.
Clowns and Jugglers: A Tribute to Syd Barrett