Windsor Davies (28 August 1930 – 17 January 2019) was a Welsh actor. He is best remembered for playing Battery Sergeant Major Williams in the sitcom It Ain't Half Hot Mum (1974–1981) over its entire r
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 0x9c5e2421b480ec024674817249ca152e29625a97b5856e071b9f4c65cb86ce3a. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9309abd6-c74e-4fde-82f4-337562381ddb.json and https://artists.proofprofile.net/proofs/artist/9309abd6-c74e-4fde-82f4-337562381ddb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Very Best Of Windsor Davies & Don Estelle
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 0x39135868186649586b80a83d8ced79a42814164539cefe274beea2111bed222e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBAYE7500503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032c655ca47e6798f9accc552e754c5a3ecd54b669d13cc288e7c5b27fd9a3e4. 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/GBAYE7500674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185f5c73b16abc10efdf0a6ec7859cb75b63a44ddedcaaed6fff9892de661567. 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/GBAYE7500676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a962f3bf0f1ed253eb72ccec243206c624e30341cd6620708439cb9d991fb34. 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/GBAYE7500677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc450cdd2daf0e13a437ac2b2b506bec91a6c5cde05b874a557f29ac7277e41. 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/GBAYE7500678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d48fa279c8b5692fc6d8d50558d72cf6e4e90b5aa6e799db6e660a0b04de3a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBAYE7500679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa992cee9987436e947097c019f1628730f9c7dc39c61e2c462c4d8b0961eaab7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAYE7500682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf755da56dc902a56445232925547bf575df87a5e3c7c0ea4a8b815bd33b1759d. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBAYE7600302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dba5057c82f3292b894e6b6396fde4193859534306ce4fc72c08a7c17eaf3a9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBAYE7500689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce44a43a4e971f7cf3e9a57937636f32f9b579917a5e89e854621913361a633. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GBAYE7500683.
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 0x03b54cfc0fd8e2a8f8c59a1363f2f848804300c6f34a751b5f3f4ace87a12bb2. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/GBAYE7500675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5edf4e62ae84a125181b70625ba0e7c01f8c0d7cebcd9f3dc9142704246998. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBAYE7500680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25daf849b4a4ff20d1848fb198b75f2dd88baa3dd1d4bded8902f3178b310ff3. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/GBAYE7500681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefc440c7c7d670efd37f6a20ba581185f5b24dbc22e09bdbfad1e6f63f41200. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GBAYE7500684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705ef44cdcc9efdd859d69bb7e324fb3e0e559fe0fc7ead42ce1fcd649436456. 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/GBAYE7500685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cb208854e5fb3ecbf7d51a0543c4f13b9b5e9f7bd3c23d55e85dc213d9a536. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBAYE7500686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba23e298a82cdb34a6d744c42827ce46d987b4ec625e7ff98d8eec7071a571b1. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBAYE7500688.