Charles Gross (born 13 May 1934) is an American film and TV composer, living in New York City. Gross, born in Boston, Massachusetts, was educated at Harvard University (BA), the New England Conservat
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 0x47c687105f4b047e2e14ee097df22b19fbb1a4c4cc51d2e04d75570504db917e. 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/9305cdd0-232a-44d2-a695-6ede14ac6f88.json and https://artists.proofprofile.net/proofs/artist/9305cdd0-232a-44d2-a695-6ede14ac6f88.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).