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 0x7ab46fae1fb532642ab0223f4bca688c85b4219367d937b0c54042566ad2496c. 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/81ef7ca8-6d83-4771-8150-3d7f0897e343.json and https://artists.proofprofile.net/proofs/artist/81ef7ca8-6d83-4771-8150-3d7f0897e343.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 0x94144839df513474aea432d76eaf6e1cf67aca9b21dd18e6962db91dd4e9f3e8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/NLWV71500006.
Beautiful World (D-Block & S-te-Fan Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ef9bbbd1c242321e9fc081ba4b64fc8cb75fc01d64d63daf7e1c98015f35c4. 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/NLF711602836.
Everything Changed (Official WiSH Outdoor 2016 Devoted Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d85ed8906df41f1fa44d158644182943e50a6834a3492f89befd15412a9119. 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/NLF711605968.
Everything Changed (Official Wish Outdoor 2016 Devoted Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc584ef345fef9f197456c34f27a3e6cf9ada625e925a30b76c6b5745c6afebd1. 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/NLF711606462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c339ab93d75fa2e097dbe00ae86056106b61a2cbd38c4e40a5c63c56d649b57. 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/NLF711606463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc584ef345fef9f197456c34f27a3e6cf9ada625e925a30b76c6b5745c6afebd1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/NLF711606462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40133671f0fb0c25758a9c6886990e5ab47f9424b76a1769059f49c2b52d963b. 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/NLZ541900809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8350fa5eb3db7458a06f7f2ea436d80c1206d808ac1d665da14ba00cc5df389f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLS241502858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8350fa5eb3db7458a06f7f2ea436d80c1206d808ac1d665da14ba00cc5df389f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLS241502858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0eea1308299d398d8d77679e4e94a0827f874cf8ce3ce565e923c4a0e84a8ac. 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/NLS241502862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ef9bbbd1c242321e9fc081ba4b64fc8cb75fc01d64d63daf7e1c98015f35c4. 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/NLF711602836.
Beautiful World [Mix Cut] - Original Mix
Revealed Recordings presents Miami 2015 (Mixed Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099c2c380f9ad89e20e9c8126507c6ffc592d9febe0d5f1696cac71de3464d39. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLS241500139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4f483e32b52869d66fd8708425f3e910d872ed7f8258cc5f8b58bb25adc865. 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/NLS241500257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c8bfb69b6d670cc5dd7ff12723bc9fb424ad107530bdda0089e1cb55c1b944. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/NLS241600833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed01b11ac6e9b64e4d1f1a1b88925a2fbe8260e87bfbee75a133c71f299bda2c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLF711602215.