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 0xb89a1fc70a4c10a48d48a84a80b50abb42118ffe54e1ebc6a494bbf5f94b820e. 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/c32fbe4c-1af3-4d45-b419-d4762f4deb91.json and https://artists.proofprofile.net/proofs/artist/c32fbe4c-1af3-4d45-b419-d4762f4deb91.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 0xc675cd62d85720be668a7481dca0763ada8f3de0b513be2d07818da1de5a8812. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZHNC2145730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ca677143aa6b9dc2c25c834483a01adfe27925a4ec6af4d38fb84f0f35210d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBKPL2164665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2605d89426388447bb4661651b1bb2cae3e198fc418e00327792632d6a1fc7. 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/QZPLS2254343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe24cf562b95381b9c480c75da56fedaef7618a0c2910e39ebe2f9ffc617d606. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAGP2203193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87287491fee068ab7904459b9c37e14e788693090ba8101e517b203a8bfbc1bc. 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/TCAGS2228393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc56c7cf912f0d460f885b4c99edd58191053ab3c8009de72c420f4d502d36e. 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/TCAGW2306983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cb0bdb93b377b875450f7dfd8f2a4c90a8a71947269ec65eff0706ad5d7795. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/GBRKQ2394449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a252d28c432f4367dbac8ac77eccf3c52c77ea26da5355f85046e649287e9c4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTV32317354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c458ef3c64001cd6afe7114fd7dc389a6105327a17a40241c05d9e35c70b1f8. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZHN72392358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6962ffa48bcd1e516cecf362e4d4c05c83b2c847274a5f06816c5d10e12e4a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBKPL2169044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644ba40492ebc88b29117b1c1bed378ebe21e91bbf51e03ce466702a819a71c7. 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/QZES92334664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05464a6ec466f4e3fedbfd86b5c8514f3c63935268ecad6d1f48472d7e6edd4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZK6P1999298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7198d6dca5cdb403fea1af6f3aa6a4d4cfc8609dbe0a939bde1264db61f70c0e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZWDE2351592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794a22a909b7ed049d1520435c4b2d83c96e5a05d895e3499dc95c8bc35fd725. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZZ8A2384087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542f707f0113e8d67918bbedddab855400388d15a6f9076d29590bc85013608e. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZZ8A2382799.
FALL4ME (Sped Up/ Slowed Down + Reverb [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0952b3e76d75552c6578ee9c2ee546110efdb949ea2dc3b1d617ca8093e91add. 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/GBRKQ2483354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371331c81261b8aa5d0a8ee2d278c320ea051fc21d878d2c84afdfb9cdcbaa2d. 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/QZZEB2421842.