Martin Stewart Simpson (born 5 May 1953) is an English folk singer, guitarist and songwriter. His music reflects a wide variety of influences and styles, rooted in Britain, Ireland, America and beyond
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 0x9c6dfd29c4b1fbbce29f7c40471780edabc19384de57f103a4733c1f8c2bee80. 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/8bd6bd09-eb75-47d5-94c9-01b8c6ce8a47.json and https://artists.proofprofile.net/proofs/artist/8bd6bd09-eb75-47d5-94c9-01b8c6ce8a47.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 0x725c87bf0a5719b28050e445cb9f33f2b36d5f1aac6484f9f9ce2279c75dfc97. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:09:47Z), 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/USA5Q0610006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbcaaac0a4abb4994f8b00958b80363e8fcbe95c4fef4091ac13b34367070e2. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USRHR9711010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2854d67343667994fc1f49d346db4baeb11f9029830c1ff4894f211c6f4c3fd8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USRHR9711011.
Music Of Ireland: Airs, Jigs, Reels, Hornpipes And Marches
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001fcf16bd78f0a0488d286b5dc4a8cc3f4686a2e708ab9e08c400dd4186cd67. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GBBHW1358901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c4b998deb97841ef31ed4c4e99319942451488a579f5005805b2c109b2f1c7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBBHW1358911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4bbad02ea04e05612191d306bd9ecb6def15d5e91464f04a02833b76153884. 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/GBBHW1559101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4bbad02ea04e05612191d306bd9ecb6def15d5e91464f04a02833b76153884. 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/GBBHW1559101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95adefcb16a0844cfb906f9ba3500d3f615f715ff596c196600fc8176609117e. 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/GBBHW1559102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92c79a8db69fd163ede22f2e0a7087490e417b5efa6f37cc8a5d1adcc205984. 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/GBBHW1559103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0d86d8c602cbcc8203a4f4fc86b3a2980980db8027adf3ef4b49deaa4a8c86. 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/GBBHW1559104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064d70ba6c693eacddb2be9d8acc6ec034ddbc38640b5edbdc4b3f11c6b5aa4d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:41:29Z), 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/GBBHW1559105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4828102d5b45f3f8e428bb7c49bb175561d2a12ce5fc6470a20a9fed334efa42. 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/GBBHW1559106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d76df5854c063a1bfb45dfed566672f282bfe21e31a0c603b06bacf48b584c. 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/GBBHW1559107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed502849ce9fe82b03b3343e36acfff8b4244a41630b15829166579aaccffed. 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/GBBHW1559108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedfe31a42f9695240cbeb9bbe9e4cbeeba9eafee9f5ba2f75c5d452c2ace312. 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/GBBHW1559109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee490995183219ef3ab70c511a15f9cbf4f123d960cff042d12462cdd5e50c5. 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/GBBHW1559110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5ee7c1d4ed23729198567fc8dc73e41e926b7c84d860f98d0ac87dd8b59c71. 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/GBBHW1559111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde50be5ea668c78bf226d6f37a9f3b2369772b71dc065cabcae32f39729da87. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBEEJ1700485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee20f5f6eb7ec7b7e1a50b612ed8fbbdb1f7645528a52dc52e1796bf1a87274. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBEEJ1700488.
Neo (feat. Richard Hawley & Dom Flemons)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cc057b906bd1e52aa3befb4cc1680a7279de6127d1abf985253629a7349897. 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/GBEEJ1900386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6355013483bb3e1ee7c433583ea28d3206d561453291518cb2fffdd73be4c2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBEEJ1900400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9493c89ea61454fa8f72e85767f4ed676197951c94bc72c57a107b2a28dcbb55. 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/GBEEJ1900387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12f3a670d97f50f7d4523ffb2b7dc74528e7ea481cd614f722d19a5a7c1b3fd. 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/GBEEJ1900390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5760965d7adbf5445185844a42d3b80170582708008f0c6e9fccfd43de63d323. 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/GBEEJ1900391.
Who's Going to Shoe Your Pretty Little Foot?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1aa7620a647d81530a26b5ca7f1e31f735d360cb3fa2c6e2d826102463ed211. 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/GBEEJ1900392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046f34b7029c9502024616be8b4fa6970f0c02628a6e347bf80af429b45af98a. 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/GBEEJ1900394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884be0dae1ded9033993c2bfbb76576cc5ddebc40d057e3dee6ea6409ba1eeca. 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/GBEEJ1900395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d3cd848c0525a9dae15f9fb62aa98110632fcb480bbab1ca741529a970ed7b. 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/GBEEJ1900398.
October Song / The Times They Are A-Changin'
Nothing But Green Willow : The Songs Of Mary Sands And Jane Gentry
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32af59f39162c2e37668771c33b011a89eff0148372309264cdc669fb974b43. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBEEJ2200095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42b558d9c6224b64dd0f2bae75e72ac20f33c0929070b7929340b518e77754b. 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/GBEEJ2200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8627ef200430791f2d97845e929912a786c75029f745e405256fd98244629466. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBEEJ2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e54c181e1848e81d29e6a9ab87e89a2fb39acfdf3a9a3b1a0fc4c777ade36c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:29:26Z), 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/GBEEJ2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72709945f2ac721b45adc2e0a72d5d590e9877a83bf094431f3fd3bcb90da9a3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBEEJ2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe897fa22419ea978ad8de9fd6675066f6ed3bee013269ce902b4a2bf35c997ab. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBEEJ2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb27d2fe8b76520723ea078208a0fe1d1ee0adff619df4c71d38977c839dc75. 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/GBEEJ2400008.
A Nod To Bob - An Artist's Tribute To Bob Dylan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031f7e0484810f88fdb2e5cd11a89713f7b23af46ca163e6b505c5f985fa877b. 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/USRHR0115409.