Keith "Lew" Lewis (1955 – 16 April 2021)1 - Lew Lewis 1955 - 2021. CanveyIsland.org. Retrieved 19 April 2021.Will Birch: So long Lew Lewis (left) who has sadly died in hospital – 16 April 2021 – the C
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 0xdf103445e3e91bd0464fabaddcee9ba7c1ef33cca00818a9eddc73324180e620. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75d3f94f-ce75-47a8-b04b-57085217a12b.json and https://artists.proofprofile.net/proofs/artist/75d3f94f-ce75-47a8-b04b-57085217a12b.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 0x6d67cd4f3f39e3582be2ee345ce0e5f24183f081834a96b0f381cf70be5830f5. 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/GBAHW0500214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370b1c44d21c039e803c9edb7cae635c2175f56318436b9afc53083bab0205ae. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/GBAHW0500215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5bb963be38286a0fc6407df8c67da51e31cfaa9bfd5fcaad55625c99ce1d8d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBAHW0500216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d13f707668dcc67e72b50ab7c7d6c6bc12b23dc1d85f6941f6965e0f22ee370. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/GBAHW0500218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a74ea5ab64276c57af525fd9e12c3edffcb45e4c53be18a48c94abea237d61. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/GBAHW0500219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67655c5dbfba8c426696471b4a0e5a73e8f792105a59a94b94e822f82eebec16. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:39:40Z), 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/GBAHW0500225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4763c9901b5f2a1375c3f5bf154ebef54c18eab806135d8c554f9e56dea916. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBAHW0500226.