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 0xdfad469d14ab23672693f0652729f0996a15b5896e7b088036df75d52fd433ea. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dba191f4-46df-4e0b-81cf-b277af85c24d.json and https://artists.proofprofile.net/proofs/artist/dba191f4-46df-4e0b-81cf-b277af85c24d.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 0xd823fc263f9dfa6190dc56bbae7eea60915a95c72a9ecbdd24b30eb395da8375. 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/QM6N22065324.
Feel It (feat. Tunji Ige) - Boxinbox & Lionsize Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c545a4509bec918dd2754f3aaabdf30864b34b7db37e79f9a2d5bd9019ecc9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWB11700069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52243ebb33ac7dd36ea01b32ec1ab1f8cab75d46c623ad7120f9a0349e166ab5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMBZ92042845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada2e93d4761a2ede710177cce8b9d962a523a0a6114a35a2c85afa98f5cb44f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:17:35Z), 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/QM6MZ2061784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97f7049a2354c322b8e6e249a6a6f48426a6de0447f812d0d9904b41ad9ba10. 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/ES5022000085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df57498f77b156474a4d8572aecfa53b0745b51b1db31587d5a435a984749a7. 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/USA2P2225935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a030c30a80e937b7d612fc38222908e54084b5eba49c58145836e383f0f402a. 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/QMDA62118394.
All My Love (feat. Conor Maynard) - BOXINBOX & Lionsize Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ea3fdc2090ab9b0c353140494c8a9c3aa8f6c8bb2993ba0993dad8c6a9fc4d. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USAT21704137.
Keeping Score (feat. Paige IV) - Boxinbox & Lionsize Remix
Keeping Score (Remixes) (feat. Paige IV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724b4b0f484de27481d577b381fda1ed76407839c2f4e78daeaa07c96bd989aa. 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/AUBM01600053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9274edf6f08371494d09726088e12c1988d78ec855d3d9e34c34df8c30fe04. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USAT21903726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf95caffd9d677fe74bed37a09e548f15e72ab8df0e0af0a45320ac13ac9ad3b. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QMBZ92261730.
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 0x74ec78a2400cd0b8cae802ff487eea19f53b8c52e021df054c7685e5ad2dda91. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ES6101900473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0d3be3352fae1127a072e0701a5deabd512e0b5238699c30f45de8a25d9bc5. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/QMDA62113853.