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 0xc0c644f7ea20f00113cf11e30a2eb71b1e5315db8be23fbd20d1f3f1143240b4. 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/b2e47a1f-c3c5-4234-9623-5f4f59a3602f.json and https://artists.proofprofile.net/proofs/artist/b2e47a1f-c3c5-4234-9623-5f4f59a3602f.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 0x04c9995f07b838d90c4db7cf8131a4ea8377217e9fee130c856f88d313aae520. 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/GBLFP1902349.
Killy Killy (feat. Stonebwoy & Kwesi Arthur) [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f90d6563cd2fed94b9d162467d26da46db2e4eedcab9a71ec6c1f8c825a6f9. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:57:45Z), 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/ZAA6R2100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c3a4eca911e694ecf3b4bc0d90d49e158de9168a6fda92341cab7946ce4de8. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZS7J2158334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a82a7481668398c304fd3d49f036c4d56cd8c94a4ed1e60b9e32bdfde5a9ae0. 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/QZNJV2120003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6779eaae926827cf515324778a3f56e9ab391ed0165750cda89e2e8308133cc6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZHZ52278559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30822a3c3a89e234669be0b5ea44e39095e05433e6e95cda53a0986a2f54aa1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTPX2274222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99949e0ef04583e056b285ca2b3766c7370c267be59c219dfb557e5aa3731ee5. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZTPX2274186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886703b1da45c96be16b371407708f88256c974c2c906bae9323d29aa9b53dfa. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:19:45Z), 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/QZTPX2274187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30822a3c3a89e234669be0b5ea44e39095e05433e6e95cda53a0986a2f54aa1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTPX2274222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235db0b8b518d2234a67d6ea6bfcd8ffb69af55ab8548e6cb204c066cf1aa7a8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:55:36Z), 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/QZTPX2274190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc6c9e24e770fe223f4faa9a665dbc098a66d7590e2b371ca961a625d662ea9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZ5AB2350848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9046786daca1977b8666cc0e480d621d700493021fd2e898fa1443a4e15d7f. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ZAC012300855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612cce69566219a221325961103aba8f0fd379f9e8c7478efcc87d3e54470d72. 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/US38Y2421485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921c9098e843244188605e5072ce821ff1ceafbe1a9722ce5757745e92e6ae72. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:47:36Z), 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/USA2P2350528.
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 0x32eebf79de8120db88f3289c0dbbfe433603bbdf822bddca2efc28511327e5f7. 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/QZS7J2455422.