James Block (born 30 January 1968) is a British canoe sprinter who competed in the early 1990s. Early life He lived on Gilbert Road in Cambridge, and gained A-levels in 1986 inCambridge Daily News Fr
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 0x28b94cdd6d4f16fab367c551ef2aad36ac99c3e5defcd9db235a821e7d733765. 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/38e40c8a-e93c-4cc8-bc16-e2b92e702dd1.json and https://artists.proofprofile.net/proofs/artist/38e40c8a-e93c-4cc8-bc16-e2b92e702dd1.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 0x59c61950e47cec52ede24623180df3daa59451bb5420e043240f2be286f7b22f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/USHM81438097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ce176df2337788e965ce7577ae3561fbd46a7a2d7c9fab90648a0c97e452c8. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USHM81438098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf054c84d5569e022b47a5bbf65b9d679a6e03d238f5672406522857b265a1058. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USHM81438100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ad641787fcd9e65d23c76244d057e2ff143dc5afaf89257058f779c75fc3df. 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/USHM81438101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34da9f0f3a52fa637dcdd5d65ad9d2a64b83b3cc21b507613f5649d9fd09405. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM81438102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11db24891777214ee30a204ea49c19a42cc3e80240ebe235647413015a42d4f0. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USHM81438107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2f9f41a7014bd4de5490be1a1c5882ca31314cc132b55c7298fad5692715c1. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USHM91404063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a178d44ab15b4fd46af50ae878247d5d1b7d83dacac9e4b0d69a8cc77b3d42. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/USHM91404064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306bdb6861ab513f7b39046d07787b861f3d724ee10794c6fcbf0bb682b6261f. 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/USCGJ1591136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d24d3c5436a79c082ca1d04479983d28336e1b6aaad7897de9a72634a7d41d0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCGJ1591144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c01b58fe7f87cc07bd54e8908e52b79cde6df310d700efa307f59f682e948a. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/USCGJ1591145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053b4fd152b79dc38a4dc208bf01da58cab04e5d3c5e7f44699ad5b9d3dcf1f8. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/USHM21661099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d3ba5e1f55614705df2df7499da385018de67d60c833cbc8ac953af061c1f4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USHM21661100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590ed335e402d2538e9f59932a618ff8b7f3ed9f0fd7e44367536ecf07541194. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USHM21661101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9873c5863281c5b747228a27e2ba0ca91bf46fcd78c10b6521ffe74336e7fb. 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/USHM21661106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc39e59a5530f6522d5365aabc095cfe518281ba4ad9677bddd469793e2b69b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USL4R1822662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df7d3d9d8ba6e63981cc7d5cd4688ddc274cc683a68bfad3663b80410827a59. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USL4R1822664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276e2dbe76e2900b9dd55c2a4a2f20aead961103e92dace455d6209f6256e066. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USL4R1822665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc667796087f28faa7f7bfa9d41f3f1a1266065c6277f916b9cbbb46eb09a5e43. 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/USL4R1822668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a3e145fcf3b1a5b82c5d764d9f2ad3e76d76af815a477ba5c5f412b6ef17dd. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/USHM82133399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8327a5b3efd53d555663bedf9d8c2355399d0efdb6abace6703c4b65acc5d9. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/USHM82133402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87510c3cd904acdc05ab1da103c14cd6c66984945b47cdb567c69478577ab24c. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/USL4R2154769.