National Health were an English progressive rock band associated with the Canterbury scene. Founded in 1975, the band featured members of keyboardist Dave Stewart's band Hatfield and the North and Ala
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 0x84c38ab44665d76de9289dd4d773ca0278e57cfa65bbeab7d881b1d3d8644b9c. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34f8df87-3ad5-45ce-81d3-ce59c7479e5e.json and https://artists.proofprofile.net/proofs/artist/34f8df87-3ad5-45ce-81d3-ce59c7479e5e.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 0x2f931554fa1d515012d740fbf162a9e07616b96e2f494e64cd9b2bc577c85fe4. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/GBAWA0346061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b654293a690517fdca009f8ce89422663f3dd581aa969ff97bde9233fdde398. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:01:53Z), 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/GBAWA0346062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a864006c62796a50b444a8f70cdc26919daaad9adec17f19302941f8fa7df6. 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/GBAWA0346063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db0e32de8d3201b79c10a82cb2fb49ef9b1a192ebc0e6593a4200b117cc372b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBAWA0234680.
The Bryden 2-Step (For Amphibians) [Part 1]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0127951cf2b840cdaa8578ff4be11c56bb7584a472887482d49f64c8e7eb77. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBAWA0349636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2227f2bf85313c217467de447bb29a6e288ca4817c56d7c6531442101bf3c3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBAWA0349637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01124100f4f64fa58a871404e7c92386ed627848dcd7f5318a7db541932a0c9. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:36:55Z), 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/GBAWA0349638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745b8e674fddc0bd48aa0d75827683209926dea8da1fe81f91915be5392c2112. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBAWA0349640.