Earth Opera was an American psychedelic rock group, active between 1967 and 1969 and featuring Peter Rowan and David Grisman. The band was associated with the "Bosstown Sound". History Both Rowan and
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 0x2ba344c8579f75e9871a810f66246eef2d0b65145a34a3edafd6f80aa191f915. 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/95ee6dcc-09e5-4719-98ee-53b75c079b49.json and https://artists.proofprofile.net/proofs/artist/95ee6dcc-09e5-4719-98ee-53b75c079b49.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).