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 0x00e1b85f31c6bf696691d24c719516df41f1e01a0ff86e2c00c82224deffe062. 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/6e9b72dc-b697-47b4-8430-f0a9da5a87d8.json and https://artists.proofprofile.net/proofs/artist/6e9b72dc-b697-47b4-8430-f0a9da5a87d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
From Here to Eternity (Featuring Giorgio Moroder)
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 0xb813d51ffde651e71685dd54ed84dc0b2a1565fd19c96893bdbc071183e6c554. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/NLM5S1900680.
The Archive (2002 - 2010) [Continuous DJ Mix]
Lazor Mixtape Summer 2024 (Continuous DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d2ea9d32c1c561404edad1b249d2b9ffc59d1c9af14479477e00a180f8bb43. 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/USUW51000327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeeb51f8cef3574eae13e93f0962e753be69bf8171d9f0f85289dc3e111e9d14. 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/USUW51000332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3085afac9895af302abdb48a16275b8ac97229551962be1f620625bee31378b8. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USUW51000335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67634edda76052c131fa366f8b12aeb91496c28628b7277ae407a6092e02a11. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/FR9W12501866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981f9f7e24bce04e86d9f211d446281aea8c127b9e88e561af7bf8f95f96d904. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FR9W12501868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf791004b35d594281818e5b3653c787de667f1ba57c79019d4b3ea6d4799ec9. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USUW51000336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda03b7c595358dfdb08e4f031affaf03cbd964d65dea74c8cc8c820167ed4e9. 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/GBKQU2086501.
Finally (with Alicia Keys) - DJ DLG Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aee84a6d424b1dc61852518b46a44952f1932fc203bb0037128497a358bacfc. 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/USUG12408027.