Trevor Gordon Martin (17 November 1929 – 5 October 2017) was a British stage and film character actor. He was known for work in the Doctor Who universe. He played Doctor Who on stage, a time lord on T
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 0x52f9262febc0ea8248d4f90e3fb5f49dc10a28dc834e4e8b14b44e535ffae38b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/230d022a-e6cf-4595-9f2b-15eb18de4cd8.json and https://artists.proofprofile.net/proofs/artist/230d022a-e6cf-4595-9f2b-15eb18de4cd8.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 0x2586a98956b177e61e6bfe91cbdf31e1b6a35f68e9230590d48292430a4d2b6a. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QZEQU2500398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972c6fa9654bb1021a508b32cf62dce21e2602c32ff4ce17b6db061e172f8d3f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZEQU2500397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bab3d293d6241963f6a3976cf0a6e02022d47fff0c38ffa3a0f5b93963c229. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZEQU2402361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38daa9c1a5710e1f434e37c7b43b3c7fde2339f33c6d781ce64332b2d003e298. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZEQU2401840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b0acafa68683d84f3cc5c84d26101a9257cbb20ffa9a435fa8dfeb27b5d175. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZEQU2401736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53d0f91b35961ef36cbdc0456f0274a54b717525d2840a3fc1a4dc08b4767de. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZEQU2401388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc611f2bce82dfaac50e57f79c83a5e8e6f596368d981ac7778974a0b66601475. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTAT2496335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2e37868ec38c58c869277a90d3536c58120ff3d52b26e3a01167c5175f7740. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZEQU2401351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf906cd61b9626d25636ff365f58866614b3fa6f27102976402359a0012b7d11. 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/QZEQU2302099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95bffe3f02bd13e6a500ef1d78dd0906f615da77f2e2c20fb4bc0006c9d1289. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZEQU2400868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26c5ec3c010aeb1c7edccd9238b76cd892ad6660e5a763058e8c55d947802fb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZEQU2400550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fdd414af410ea37b6e0fb4c3b552bcc04fa1f27affd197527a4fb72b7120e4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZEQU2400295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf906cd61b9626d25636ff365f58866614b3fa6f27102976402359a0012b7d11. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZEQU2302099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a55bb3e8f08f1a6963fc5c1e1fde6f4dabd2618efa7263f471655702d422acb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZEQU2301406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa29e27653bc790f9bcd251529e2bdb9b6a49b5f696d1eba310936b38faf5026. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZEQU2301284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4621724e1189f25d920ec3e3f478cab48515692ffe9a7f797e2c34906b1a7e5. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QZEQU2300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef03084290b086fdc7d2f3ec7ed89f662861ed7142b7834328c2a873f6093b8c. 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/QZEQU2300152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581736b309f91e749218d60933f377d85bf54233bd7c683e55091f5f47b73240. 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/QZEQU2300153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76191341571a08c69e5ab7308ffd3f6fc5f68fc9a26a3bb4a8fcfa7ba8e19de. 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/QZEQU2300154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0cd901c292e6ec35bbd6c469f1ab9ece7e49959dc5f3cbadce12c63cc48ff5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZEQU2300155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76191341571a08c69e5ab7308ffd3f6fc5f68fc9a26a3bb4a8fcfa7ba8e19de. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZEQU2300154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581736b309f91e749218d60933f377d85bf54233bd7c683e55091f5f47b73240. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZEQU2300153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef03084290b086fdc7d2f3ec7ed89f662861ed7142b7834328c2a873f6093b8c. 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/QZEQU2300152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4621724e1189f25d920ec3e3f478cab48515692ffe9a7f797e2c34906b1a7e5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZEQU2300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51346e60f095af0c27f0fa378172fd97e6d10308dacb5151728f8defe881076. 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/QZNJY2214830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a7c284a6237981a52a97b18e79fe83d1c7dad0c5a686c8f8dd216c655a917e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNJW2294684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc822a99ae3073b6805bf5cbfb931b6e469e23cdd559cbe220b377ac8d4bc654. 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/QZHZ52221860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df8d0f89a386d4f943d36ce6dc427fa66b1c6f71f2bacc000da3d9b5089d155. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZEQU2206412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317850059f3052c489e872f64a30f8eface347afe9f795a1e92986010dfa4e9a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZEQU2203459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1d20de069515a175cf05cc80ee7eb2e97cb8de8ee5e02b62a5f87773d3633d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZEQU2106050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49afdbef74fc6ceae475a33f97c481b577acd1281243065982453c469fef2a58. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZEQU2080340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bf9d26df3275f18c534935eb557f326e19f4b57e3df6fc0ba33eeabe65f7c1. 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/QZEQU2076274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9499e4379fa972300b75c616b31921c976d2630b279db5e09667007f4e33658b. 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/QZEQU2064488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab72d5eb9cb01d33ef6e4cc41235d449459a0accd026e6e9ffffa826ec1dfc0. 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/QZEQU2035928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f93901f0e732f29f0d50be7fa851484e0482670cfa160b56b9f55c8e3e8f26f. 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/USCGH1846662.