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 0x8dd8e30441fe22c7e0912eef47ec0b1e50550ddaa4d3ff73a71071c6acbb16cd. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9e0d586-8471-4304-833e-87c7d9c8cc8d.json and https://artists.proofprofile.net/proofs/artist/c9e0d586-8471-4304-833e-87c7d9c8cc8d.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 0xd1da3ee2f4dfedd0d833ae35703240613aa27462a79f8f2ae735c79786212c76. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:39:21Z), 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/USLZJ2370620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8504c27ebdd2ebe14873ad3e82110709b5e521ab91aae2b288d2d0d461a7f204. 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/GBRKQ2368874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78333dbe84b6515fc233955241a61445fd91d5ff39b46180225030d2931ae767. 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/QZTRX2371569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30abf4fcf90710b2eeb0337093c6296c10e33ce0de125d59d85ff1a4039b39c. 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/QZTRX2371571.
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 0x60f6b17df114274739d769756634b7c88b973185a54fd47a7a2ba966e477267b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZWV32389584.
BACK TO THE FUTURE (KARPOVICH Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8aeae79fda6ba11e3576fd6f9fe9c4fe5bf694b5b1f58b96db0213051acf39. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBRKQ2410170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbcc6eaa2ca1baf718e4b9ed2a3dcdeb665d1919f703039fee112fb50ec31a4. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/GBRKQ2435542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30958669702ba1b2746cbaee93c1ccb3d9c340110fcdcdff956f2f9bc36cfa55. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:08:31Z), 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/QZWV32444823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb668419c0a5c0b64233522aee57e49184a8cc05a49c9f8a9e619a473e7a2f4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEH742500415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a18b633aaf9f77604b0f23ea10e6ab883430979cc7ff9a90de4043585bf1a1. 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/QZ5FN2522072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eedbe5bf589bed441cf80340dfe906e2bbbac3d7fcdf65ad2b8d71e32036aa5. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GBWUL2596686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f15074d7fae7c83b3b4f6f274f677669b119e7d8cba2f52b7bf893f3ae1da6. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:48:08Z), 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/QZWV32580938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4768ba4ccc7950eaa4ae5acdf46ef7a54e98552e831e835b5acb278ff28ea7. 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/US83Z2302096.
Best of 2023, Compiled by BRK (BR) - Continuous DJ Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff28bd6b57cd5b0212d8f0534615d84d8c6ebf30f96fc9df2712d15cb27697a. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/QZZ8A2395555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf7a1daf22917666d671939289e8883234601c3acb60b3442bc18b3ab2a8da1. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/GBRKQ2435532.