David Cyril Eric Swarbrick (5 April 1941 – 3 June 2016) was an English traditional folk musician and songwriter who primarily played the violin. He was one of the most highly regarded musicians produc
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 0x762a164db075bd6f905e700fba06cea5ca600d52f8eda0009f90dd00fa206f19. 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/08f41e98-d051-467c-9afc-449a320367f5.json and https://artists.proofprofile.net/proofs/artist/08f41e98-d051-467c-9afc-449a320367f5.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 0x30a556ddbb111059109f9b6b41de85284e86f4e8f9e3133167a05bd20b52f8e9. 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/GBBHW9951701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613579e5ff607501c2ba1a379d19941eee0d198227e82850754885ae5de4478e. 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/GBBHW9951702.
Bottom of the Puch Bowl / The Swallow Tail / Marquis of Tullybardine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0484364030aba2c15190e2e492709948d8094a5f5048447b5a7c92fb4c643a. 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/GBBHW9951703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3168930aefcb03d1adaa3318d186a532083c35c4883912469d069a31e84aeb. 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/GBBHW9951705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73e2c9e2971cbecf437f09ed0d8a1c825ecae93306c505d096d933c5b063de5. 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/GBBHW9951707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ce734f0a15a3d0ce3e3875f11303208eef12d21c589678b20782e327fc5994. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/GBBHW9951708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975b7b2e9d55ffc07561d5ab7bba03facc89455ba889b0d6dcb9290f81bbeaa5. 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/GBBHW9951711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a2858b88bcc13a2725b3c2b27fe5993794deb72941bf8a005a3929c6fefd51. 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/GBBHW9951716.
It Suits Me Well - The Transatlantic Anthology
The Swallows Tail / Rakes of Kildare / Blackthron Stick
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc827bd47587e6488ef001c8b4e366d734c10e6c02e4594ef62d3067a247ab339. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBAJE0610486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc827bd47587e6488ef001c8b4e366d734c10e6c02e4594ef62d3067a247ab339. 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/GBAJE0610486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e94b7ff1b4ef0610e8548bfb09460832caf53b4dad6d24f1b3c125ead46ebd. 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/GBAJE0610487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ca805b95a61574155c2d3d02edfbc5fab86f719e8a904d07788b2c648afe59. 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/GBAJE0610491.
Shannon Bells / Fairy Dance / Miss McLeod's Reel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4928de8e16c37f4554c1e8aa609e6e9bef98242e1a64a7d572968e9e9aca9947. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/GBAJE0610494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fe934451d700a4793765a30a3eabee33305c222b02ae08c8f68493f4415cf0. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBAJE0610500.
Sean O'Dwyer of the Glen / The Hag With the Money / Sleepy Maggie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3475ca864048c97ef296c80266af1af1e458cf83b8909020022bb99c91198566. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBAJE0610502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938b2031806d4d64c4ac7188a9f5c459f3cb2c85e92f064176f5a249b4455c45. 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/GBAJE7600401.