Carpe noctem is a Latin phrase meaning "seize the night". Carpe noctem may also refer to: "Carpe Noctem" (Angel), an episode of the television series Angel "Carpe Noctem", a song by Jim Steinman f
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 0x23ed80e3f38d725bd78a56a46719b1a2dcc9f27d3d9c8dac0efe6d25bfeb2abd. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/845d013b-47f0-44d1-9608-1497f49f5d51.json and https://artists.proofprofile.net/proofs/artist/845d013b-47f0-44d1-9608-1497f49f5d51.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).