Derek Bermel (born 1967, in New York City) is an American composer, clarinetist and conductor whose music blends various facets of world music, funk and jazz with largely classical performing forces a
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 0x0c4a28c4fefc57f05cc29aed5694478e6c021ea7c7c3cc5c04df81d5670ad290. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cd132b9c-991e-437d-8217-0a892e9a47be.json and https://artists.proofprofile.net/proofs/artist/cd132b9c-991e-437d-8217-0a892e9a47be.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Derek Bermel: Migration Series, Mar de setembro & A Shout, a Whisper, and a Trace