Thomas Stewart Baker (born 20 January 1934) is an English actor and writer. He is best known for playing the fourth incarnation of the Doctor in the BBC science fiction series Doctor Who from 1974 to
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 0x5feb1cfe4424042bab395fc9c4b3787df5f57e0393623089b9e066d054f3e729. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1105e5f4-9a85-4974-a3b9-aa94cf2cc497.json and https://artists.proofprofile.net/proofs/artist/1105e5f4-9a85-4974-a3b9-aa94cf2cc497.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 0xdbd29e983965f9d97a81d89278b43484788f4cf592ee5582997660d51e6dc652. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/US83Z2348322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988002970a2a9b824f0a032a7005917f80848245af2e1a015f1e3b3f1961959b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US83Z2319655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbe0b994d4dcd081597fdecd0ddb9d5dd92b041d52aeea7d6fb875c3f848bf9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US83Z2319651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd878b9e2d004ed31f2f1a1724190ca27fd791228f206a33aebe4444f6e946654. 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/US83Z2319653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87454e003d20c98e32f9b2fe576bb551d8519b366a85505d09b1c12dc1e580e9. 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/US83Z2319647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174f6ae33ad7f97b2a1e96afc0758a79038a134e6bec23011176b5dfc1a12696. 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/US83Z2319652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66792364c8bd79ac48abcda60092ca909cb0205ab7e31611d930e5c27c8362d8. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:31:25Z), 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/US83Z2319650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7874d74464966a3590c0ba7296b7c35001944fb74a9f3abcdd8ac01b909b295. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z2486558.
Natural Intelligence (Charles Oliver Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a30cf0a48df5e468a73f2d1507eaacca86c94e2104eaa5ff08890a765937f1. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/US83Z2482703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf989416d5de2d5a77572b24d667d8ff57d05e027f54c28418205de0f189cb0. 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/US83Z2478624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d01f7b2333fcee70b56eb8e64abccab62cf9828ab1f2c20448ce208616d512. 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/US83Z2478456.
Ruled By The Machines (Jossie Telch Remix)
Would You Like To Talk To A Human? (Ryanosaurus Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb904651c7ae63a8b1374fd864fa183afc6fd6f51f0a6714af7664d5123574feb. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US83Z2478622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d14560c3af664fdc478c69736c9f54584237018ef89ed2932273a55ba3527c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US83Z2478623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf989416d5de2d5a77572b24d667d8ff57d05e027f54c28418205de0f189cb0. 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/US83Z2478624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a54875a92f1aae9339d0a05faef5c9bc207fde34034f96980a9062c3f8cea2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z2305614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bf550793bec33d6c6ac6368fb473c58c2a79d08f2abbe2c5450954038cdf97. 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/US83Z2231249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacab1931ac915ffe5c1d48cde7cd645b68a0110b8f3e2be216290d271a04d3a2. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/US83Z2213249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d26d8070febe36685b2e0e564d9112d8b08df086375bf457bea7e6f074c365. 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/US83Z2150928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb72319706449afceed4e7796d1d733812110e0c506d8bc8aaab7ebde6320a2c. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:11:18Z), 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/US83Z2150927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a622fbbcd47ee6d95f38df18d9b51fa1510538e4f282e43b65ffd176e6dc82. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z2143941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578cb172707bbd61f41e65681810fd8c20268213d6762551e281affa7402d035. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/US83Z2124808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd9abe1ec15bac119cd940759df4cf3fffd6fe523311010433947b2b7c58467. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US83Z2122709.