David William (24 June 1926 – 28 July 2010) was a British Canadian actor and director. He was born Bryan David Williams in London, the only child of Eric Williams and Olwen Roose.Michael Coveney, Da
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 0xc0e04b0a175b6e223203b3cf16c3a512fa980d6126ec07c65f4d64674ae9b6ec. Chain 2 (Bitcoin): anchored in block 953681 (2026-06-14T19:31:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64e3d938-0e45-4224-87bb-d9f0cf92c599.json and https://artists.proofprofile.net/proofs/artist/64e3d938-0e45-4224-87bb-d9f0cf92c599.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 0xf9f67c8a8c6b46eb8e30a7144f5d682aa930c690f199969eb92bd2aa4edb7803. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAIV2437162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323f32ee53722b1ce3b9a8b55e2f9b59bc0d045f7ed303b7eb6d0f806170012c. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/TCAIT2437166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb090fd5d5279861f4abacae60e8a4b32278687bbffd1facd3173e4e0d4e3e0fd. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TCAIU2437172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e71d9f9f237ec5ee4ed28eb093c7184ec36264f151bcb00bca6b0b45f108047. 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/TCAIT2437179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0602469c55c9942681b3cf6266451ca0324401244ce7b178b6b09be64c89b03. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/TCAIT2437185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615355c6efc5d15322ace76c0677919eb4b6418294a9074dbe11440675d9cb6e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCAIU2437195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8575129b15866425ec9fc5d4c0ae31f97e6d6f3db2a175f33e0e370098566425. 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/TCAIU2437198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e72e4440996b5a596ce44313c22c3d754c909534862a7e18d3d47e22c3c2be. 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/TCAIU2437201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832b0ed72ad5b53c2028e396ff7736ed36f92bb95a357dd14d022494ca493de4. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/TCAIU2437205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd472fdb05b2570ce93bdbd0f8484dbcb4171d5eb3a2dc4d56fd5b6e9cb154c52. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAIU2437211.