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 0xd6dff3b6a3fe03424c1f369a6a44ab4371d0d2006c46725296af585dcff7d81a. 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/b26cef86-55b4-4bc4-8922-2d9714842c25.json and https://artists.proofprofile.net/proofs/artist/b26cef86-55b4-4bc4-8922-2d9714842c25.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 0x8065df8bc157026163d291fa29cb08c4f702dd46dea1ce0908b904db2cb95b1e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USA371376379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e6da4b957fb221c9baa9082e7eb2ce68925ba96cffca4006c889a037d1250f. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QMFMF2337464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdb6ebc7a38eb92fa8ef504dff67246a91816dcbf5337b7c094265244a1e57b. 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/QM6P42416977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641748b9c20ea3485cdccb8418a16dbab42826e386abdd2d079d8a56e79d2465. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QM6P42539605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80d940a3e3034df4ef6a79954537fae4e5a2dcc9d5c13f4870a67c98f991593. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMBZ92544566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ab315c0c3744553084eea3fcbf3801a48ed056f89607fcd08a7a288d1a3e9e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QMBZ92544567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a4f729ecaecb7c86ec5b79aab394a71cfecfb74edbbd32c5f84bf239c89b42. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:48:35Z), 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/QMBZ92544574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58ca75de4c99006b3e9fee654c52aa24a99aa5b463eceac78016fad615486cf. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QMBZ92544569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb947314ba3b8121a726b89a1f49062bf253114852858254b45dbebfd9763db60. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QMBZ92544573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc27c02e4c0cf28fd8120699b7906e83570166c5898bc966f815f2dd6a50667e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMBZ92544571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbf58daa190b8767a58742e9cd185bfe86c663414f52e99e8cc38f597d1b2a4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMBZ92544568.
Déjà Vu (ft. Rasheed Chappell & Soul The American Dream)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37756a0f7b4e9cc897f1f291df3e4634da8ce4a13e864229bc6cbfe5e162d299. 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/FR5R00906724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddea96b67ba0277f71d82d27c122d058a136da08ad86301af402e049a08db1d. 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/US92U1911247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddea96b67ba0277f71d82d27c122d058a136da08ad86301af402e049a08db1d. 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/US92U1911247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6d1c84c089022ac4cb7f2edfbdddb705cdd6942924d18ba4d4b5e5598b518f. 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/QM6MZ1538638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c81e91af3c9bde551a30218f9126f2f15fbb1c004f008a031b95e218e28809d. 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/USHM22080070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa3252f25374cb9a0b351416bda1828948ccf2b47dc815405668f14169cba8f. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/US92U1911248.
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 0xd087fefc7dc809306101f9efed1ddeeb51573e5793356663b812de71dbd714d2. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEZC62146170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8054206f6ff97f112f9251a6a1959edf93cff0857114b14668ef2ac528ee883f. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/US92U1911249.
Body After Body (feat. Rasheed Chappell)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf03af521aea9d51845c0fa23d3e66991642de9fc3afc976cf5f43cc6de9ac6. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/TCAER2024159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1361a6fcd2593f13d0c9cfaa03429fbb723083b07d2cdf5279776826b04dcf31. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZ4JJ1624264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a31b809448dc6978775adaca0cb982c988dcb00e4968de94b46e36e0196ea6. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USUYG1276958.