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 0x3526d4b154f5961f8a73c2607a1d9f44b1811354c90073973bd7a9d40043ac13. 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/2b5028ae-610e-4d3a-8607-291fa008f45c.json and https://artists.proofprofile.net/proofs/artist/2b5028ae-610e-4d3a-8607-291fa008f45c.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 0x2c419a53500ad5d2d5d98281bc45e0e79174efd3af043a65ba788164b68513d7. 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/US7SF2056913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ce0905ff100c1cfc6fd65d1b0add5150477be6c3f622c55a95a15a484eee6d. 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/US7SF2056914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7573fd7f1dd541a0100dd20828cf1fb527b59982135416df238a6e9ee34d828f. 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/US7SF2056915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d537018e3f9b7f6bb3dd9b40cd23152cfd4f8e78a498b322649f491099dc4d. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/US7SF2056916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9d78c25a9af44d651afa8f5ad011499849af57f5270ee786bc02182905134c. 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/US7SF2056912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8bf6edd447856076a525706f461e77d01af4504fdafce6ed025b67ac269c76. 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/US7SF2056918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8716541af3418ef21f569317059bc81ad941b915ad9bfb66ab2abe073f2c9a. 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/US7SF2056919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849b159a7f37f6ac4c93bb53d9fcdd547d431c59b249ea8ee7b935c456365594. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/US7SF1956745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5afedfcadd25195e38cfc5bd401b5c7f89031ca6d720bbdfa1af4f98ccdcc5. 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/US7SF2056920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff1fd8ee6784628e02c27d4122bb54b2a810d989f751009202c21fcb4578fd5. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/US7SF1956809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fed0409f7ef1d1453abb2e16fe288b457a2aeb4149989b308bd6a3f12a174ab. 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/UK6BP2400493.
Passion (feat. Derrick ‘Hot Soss’ Cummings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fed0409f7ef1d1453abb2e16fe288b457a2aeb4149989b308bd6a3f12a174ab. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UK6BP2400493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32116e7e58a15f9a0bf2002bd7a5d81ab7f5fa41b0aa53a3a23dea03dea97dc. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/UK6BP2500594.
A Romantic Night In (The Love Songs Album)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd517daaaeacdf3e264bf41737f19bfb45d57e2101e4dedfaad1cc83594f34ca. 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/TCAEZ2085015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449799c878322e44a6dbdc309bbd1e6f848e143513413fd1b42be45d834229be. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USQY51004599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f04264ecc89d9a0a3f44088830f6d01a5daedb9df0b825a6e2db85aa471a29. 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/USQY51004602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b1fea40e68d8ed3f2c9f707f538d30872fa34bf76bccbca330c051d48266bd. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USA560568239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16abf65d601f473f3ec2e949eee5c1e1ae9f2c0ab799af3f986f8530cd3b0760. 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/US7SF1352485.
Overjoyed! A Celebration of Stevie Wonder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573e4bc6be46319c771addc2d2c29a1e2077bef5ead4593ce60bcbfdd76f97da. 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/USA560671175.
You Remind Me (feat. Chris “Big Dog” Davis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafc725b1163fa25e86c18b989baa95fa2a62dd7fb3aa412f97257480e5a611f. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/QMAAK2380318.