GA1 or GA-1 may refer to: Science and Medicine GA1, Glutaric aciduria type 1, an inherited genetic disorder GA1, Gibberellin A1, a form of the gibberellin plant hormone Transport Boeing GA-1, a 1
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 0xa6b3ffb8277b7afa525e4cdfacb202ee13b95171ea329bb0a243a5c9f17e16e6. Chain 2 (Bitcoin): anchored in block 953710 (2026-06-14T23:32:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ee5a9b4-dc63-47b4-97e5-5c053fa20acc.json and https://artists.proofprofile.net/proofs/artist/7ee5a9b4-dc63-47b4-97e5-5c053fa20acc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).