5:55 is the second studio album by French and British musician and actress Charlotte Gainsbourg. It was also her first album in twenty years. Charlotte collaborated on the album with French duo Air, E
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 0x605c4ac0640b5952633ddc0fd7b2929203ac77553d7f3e884c45b852ba679c3c. Chain 2 (Bitcoin): anchored in block 953885 (2026-06-16T04:12:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b7f987e-c802-48ce-bb17-0b1c70c6540d.json and https://artists.proofprofile.net/proofs/artist/0b7f987e-c802-48ce-bb17-0b1c70c6540d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).