Quo may refer to: Quo (group), a 1990s hip hop group, or their 1994 album Quo (Status Quo album), 1974 Quo (magazine), a Spanish-language magazine Akwa Ibom Airport, IATA airport code "QUO" See
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 0x56540e83f6a4dee2e12e37251be27f890e731a9196e4c89bcd8f39c43aaade55. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc06a69e-7f59-4873-b68a-50b570152837.json and https://artists.proofprofile.net/proofs/artist/dc06a69e-7f59-4873-b68a-50b570152837.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).