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 0x42b497453e1d2ca0052667900802df4e512c01cd92f5737a14d1c11e7f4f1041. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5dc0d59-55e1-4069-8dea-3eba0d20c739.json and https://artists.proofprofile.net/proofs/artist/b5dc0d59-55e1-4069-8dea-3eba0d20c739.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 0x0995c738a5524690fe0080d6883c3b9458045b11cfaaa87650ff399b38a0bfd3. 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/USJ3V1426151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cffc282f9d55594a97931f08d71ce893f57a34c488ba0f6f1f92190e6c89dbc. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QMEU32400111.
ooh la la (feat. Lil Wayne, Greg Nice & DJ Premier) (Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cbcfd2d7eca30124803aad53298f4106efa2e848d4a05a31931c6fea4ebfeb. 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/QMRSZ2101169.
ooh la la (feat. Greg Nice & DJ Premier)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28799320f0e7f772d828f9aa6bbb53488df2cc5144c26d721e1f425d527772c. 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/QMRSZ2000720.
ooh la la (feat. Lil Wayne, Greg Nice & DJ Premier) [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cbcfd2d7eca30124803aad53298f4106efa2e848d4a05a31931c6fea4ebfeb. 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/QMRSZ2101169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28799320f0e7f772d828f9aa6bbb53488df2cc5144c26d721e1f425d527772c. 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/QMRSZ2000720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28799320f0e7f772d828f9aa6bbb53488df2cc5144c26d721e1f425d527772c. 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/QMRSZ2000720.
The Horns (feat. Greg Nice, DJ Kool & Deborah Lee) - Radio Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3aa280f45a64bfa5cf376cf4f98f8c92a80b4ca4ca7e4da52f3150f9a84aca. 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/DEL711510182.