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 0x4c278fe577f5c3aad13865679cfc99ff9abfdbdec84dc89a1d4a4f45ae451269. 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/e055b6fe-f642-4195-adbc-9f5305444211.json and https://artists.proofprofile.net/proofs/artist/e055b6fe-f642-4195-adbc-9f5305444211.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 0x65eacbd117a33c77a7df6cb6c766dde9f64ccf1be185ad986ba2c44e79dc9579. 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/QZ8LD1934016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb7c9f592792b6182e9eabeaf9672f986bab8e6d2407f4db26e0c749bf28e03. 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/QZ8LD1934024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39170291196fa54de87e5921dc1d5e9a215f59ed621b308b633fb635eb42a26. 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/QZ8LD1934027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8933ca98f224b5b481fd1f5fc977a72653db95c2384d8c2873d0f5e38d870047. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:04:46Z), 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/QZ8LD1934022.
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 0xc238986dd31a95ea3f698d9125ef7bc81d1a2b618d361a14ad4a850e084f5fb8. 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/QZ8LD1934015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0dc732eb28d3f246a48444676e55eea6088b074fe46ef14f6c8f9828b35a76. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZ8LD1934028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3420c973c50dbd4b25b60c6d0fce286ddcb0c3d781637d82dec1d9a0e640a9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:04:22Z), 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/UKW3Z2202083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5811581fa2a1db3a76996d8f5dd008a40e7adfa09f95eda851e820b6846c92b6. 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/QZTAU2173165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe7e0c3b494f31581617022a810382414b40286cb6a40adb367c7035fb3fca8. 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/UKW3Z2202346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc277e693c77101032ebad63e1b96e46580981a074a8eb8a679c34d73de25514b. 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/QZDA72209148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679b60719b799d727f7cea18ed845295f24eaf8cc7f501107258b994d429564e. 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/UKW3Z2202348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2ede28712ebff07de9231fca6da676b01a5920e56bbb11a7f9fe4c7f29bb4d. 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/UKW3Z2202349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d520710797f2281d3044f98ac34c3bb90fafdf095357709e7eada6871bb4874. 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/UKW3Z2202350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a25ed3f57e86fb40eb279bca08f3bfe9138c4784a4db441f46cfce9ea221809. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/UKW3Z2202352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0924a42555ab46d0942568e8d9249cd2fa06a7b24a59cbe08bd8134fb1b7b0. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/UKW3Z2202345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46ebd9de646e6182f9e274df2cb7d680b4e4af718998d46f975065e6c3699e6. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/UKW3Z2201341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdf3e3debf2314fc4a0bb14ea5a2b23020451748246dec1d4ecac7214313958. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/UKW3Z2201626.
Ever Cross Your Mind (Live At The Triskel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49757a516095bfe66dd06752f7ff4208d02662e6c385d5e1db4e9a212b1c212. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/IEJOG2400004.