REDIRECT Premium Bonds#ERNIE Category:History of computing in the United Kingdom
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 0x272bee3e6c8e7974f1138e5127d270941ba5ee3e1fc0b956b4cf27467bb2ea6e. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d618236f-e7b0-476e-8c51-81d88502c142.json and https://artists.proofprofile.net/proofs/artist/d618236f-e7b0-476e-8c51-81d88502c142.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 0xd69ddb4d43996b530adaf380ac078074cc995df8e8fdad44fe503bffb9e98969. 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/UKACT2232967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a90e14cb8eb33e1e71bf2b7614fcfaa9fd150ee6dc67ca023e87f8f5a8ad1a. 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/GB9Y51200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c804ae6ba7061df386887801777a1c886c9271b3f5e733c38f4195c200044d9. 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/GRPA12300249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0954ed591e7d4ef328cf5eca4117789f4c5873c42794286ef9aa2c34273c8600. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/GRPA12300250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98b841e6eac217a9238eddd5fae16cb1ea936683a56a665e909bd0ab43b2244. 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/GRPA12300219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1e0311e039ee8c633b4da57cf487806fd666d9a064271d5d1a2febd88606f1. 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/GRPA12300251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8329049f015b7b22c884d68ea594c2d5b09d0bacf06cc1155370880b83e5f5b3. 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/GRPA12300252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cd51b17818c56cc53354ae7ecea5a113364c238294555bccd72619b818de1e. 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/GRPA12300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76cda67d47bd98543de803bc4d8f28d2a9912a7011edda1955d4d04fed5f225. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/GRPA12300253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7648ad6b32a08e5f28ca4b43b7511758fbd84c1e7d9b5710612193952adf5d. 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/GRPA12300254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01e997a77f3769fa946450c11985f40763a8067ea2a04cd071e95cd1e42f9cf. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GRPA12300255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183270046ae15f410b9461060746e0dcc1baf4f0c749b5f975440fdd8bcdc62d. 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/GRPA12300256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213cc2ff8b582b977aed3a69cbf873eebb05a053c150e6346067fcda334df004. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GRPA12300257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebde9a4e1e44932c1eded590942ca8d5b753fc32cfffd6e2dd4febd07a9511b. 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/GRPA12300258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd741263400301a2f7b255266eb347659dca00f3dbe20fd6266a59d509d6db9d7. 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/GRPA12300260.