Benjamin Verdery (born 1955) is an American classical guitarist, composer and teacher.Summerfield, Maurice J. The Classical Guitar: Its Evolution and Its Players Since 1800, Newcastle-upon-Tyne, UK:
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 0x9632819c93fe99af95ec15f278555cb55d2244f4e4bff265d73d5093d72099af. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9c05863-3e54-4469-b8de-72f5e8769f24.json and https://artists.proofprofile.net/proofs/artist/a9c05863-3e54-4469-b8de-72f5e8769f24.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bach: Two Generations - Concerti Arranged for Guitar and Chamber Orchestra
Ben Verdery Guitar Project: On Vineyard Sound
Scenes from Ellis Island: Guitar Music of Benjamin Verdery
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 0xaa3a47afbfa614dfc24177674f49f85f81254eb2d917e479d39b533612b06842. 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/USWH19801097.