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 0x59c981b5150052f0478dbbea6486c69be537876d0bad619dcd37bad436b15a3a. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b5b8da5-0b89-4f17-b477-30a646969960.json and https://artists.proofprofile.net/proofs/artist/0b5b8da5-0b89-4f17-b477-30a646969960.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 0x79c98075d35a26e229557a6b2ca84824b5b05b76f7d42af4891a5e3e23c022a5. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DEZC62361530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5db1682fc3890c691a9fb10df666cd764f0893a73fa23903f3643f41c5fc84. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEZC62361531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f525953fcfd884a96400f99e23802bc1aab0d591e60471e8b139cdfa14d4a74. 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/DEZC62361532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d159e9424611bfc6ee6cb3faa1f5b67a82b48903741e6ac7c1e3184447601fb. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEZC62361533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf794ab21ab7b3b0bd53f3e776afadf776a548b3d4ad14c5be9eb4443ecb2e36c. 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/DEZC62361534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259f243e483d223726639d7ba006dcb45c71eedabcea122968ea03b652298e5d. 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/DEZC62361535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738be00d5c9a62a214ccef3443d8dadfc14e6c176af19036da97281823acf9fc. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEZC62361536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb46c8212b20fb4bf38c70c767b7a3d615408b0584d6b52639c95f700465a3c. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DEZC62361537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a6f22f5c104576ea6dc72a4cbb269c4ea269390579f69e0a1a492e10e444a8. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEZC62361538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70309d12dbe9388a7ce4fa55c994c8d94719365a5aa41d205d8c2f3a048b171. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/DEZC62361539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184cf48219bdb700a6597298e94794bcd96e36e42e15be8739a6b29d8ab81aa3. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEZC62361540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b91325cccf50ce6f6ef1918ba357fc5a3478b57656fcdcd4ee001b289f0cc05. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/DEZC62361541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c63783fc8f43bf7e0888f9cce35d6542a097002ef9c6e275f61979476f50ff. 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/QM6P42443913.
J.U.X.X. Diamondz (Jewelz Unbreakable Xcellent Xclusive Diamondz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d702445f27c07d0e7fe7c3be8b3f0b1fc5be6a5e035a38a4558facdf550828. 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/QMDA62207199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42bf21e34bbc6b393d1506d871a671c411e977acd199e1d9aee82389b61ea56. 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/QMDA62207208.
Lord Knowz Vol 2: Don't Be Scared...Be Frightened
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4d2bbf58212c0d6ad07eeb93fc7be543237b8028262f2e039eb8e08ff813a8. 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/DEZC62418524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5844c058fcac6ee67f83bd0df7922c3c61db02e6f4a1931ccc7c0fa3a380b6. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEZC62353617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44d3b5edac7a930784ae068439618af25144707c0f9f7526a83d5449b3281cf. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEZC62347544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6d9e93a2dcb220ed21c338911c27a53bc6aaac4e33f2c18a20a6b96ba91a4a. 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/DEZC62296433.
Who?Mag Distribution Essentials Vol. 5: Hip Hop
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf583a835b749e204ff19b15cd57911b7d08afbdfb3f36977b312afc3544f3a. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/CA1UI2300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ccca74a9c350b20396922e30f19939d6b11fa9bf4ae08765410bcfd7e2b992. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEZC62383426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318a461166386b586d3ecd969c019e0d00bad55315274415dbe9c1b215d73c5a. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/TCAEJ1973728.