Garbo may refer to: People Greta Garbo (1905–1990), Swedish actress Gunnar Garbo (1924–2016), Norwegian journalist and politician Ingvald Garbo (1891–1941), member of the Norwegian Resistance in WWII
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 0xa414d11a36a2bbde5d4e12e8c71333f1bacb3a9f1080440b612abfc305b9f132. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4b6bd8d6-7111-493a-80a2-93224ac1d68e.json and https://artists.proofprofile.net/proofs/artist/4b6bd8d6-7111-493a-80a2-93224ac1d68e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).