Gasco may refer to: GASCO, an Abu Dhabi gas company GasCo, a subsidiary of Dynegy Egyptian Natural Gas Company FC Gasco, a Somali football club Gasco FC, an Egyptian football club; see 2014–15 Z
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 0x0381eb96d69d18f42b7bdd22c6308ba9b5e65f03b0e2f5c452be1e295a26a989. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdbfe8db-e9d6-4f19-9f98-6aa9ef470e60.json and https://artists.proofprofile.net/proofs/artist/fdbfe8db-e9d6-4f19-9f98-6aa9ef470e60.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).