Katherine Bryan (born 1982) is a British flautist. She was appointed Principal Flute of the Royal Scottish National Orchestra in Spring 2003, at the age of 21. Career Bryan was born in 1982 and educa
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 0xa09767b52387a7a480e3f4e0d1371c8a9b927d1a8fe26b65d086e23023a1d35f. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/93f3a77f-96cc-4a5b-839b-f58274337516.json and https://artists.proofprofile.net/proofs/artist/93f3a77f-96cc-4a5b-839b-f58274337516.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Liebermann: Flute Concerto - Works by Hüe, Nielsen and Poulenc
Katherine Bryan plays Flute Concertos by Christopher Rouse & Jacques Ibert
Lakmé: Flower Duet (Arr. for 2 Flutes and Orchestra)
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 0xa0a42405a49a4f31e6685f63faad0b9b9ad4f013cd5f8ea15e0b96c78df8a72b. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GBLWD1704108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b2d31e96503c05646191398d4a53619a6df7fe1d01b13ae306b482f2dccb83. 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/GBLWD0309501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a29457654c6a83ea1dcd5de0af753c448972b95132944e9917551adf572d68. 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/USPMZ2511311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a29457654c6a83ea1dcd5de0af753c448972b95132944e9917551adf572d68. 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/USPMZ2511311.