The Waiting List () is a 2000 comedy-drama film directed and co-written by Juan Carlos Tabío. It was screened in the Un Certain Regard section at the 2000 Cannes Film Festival. It is a co-production a
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5385a67f89b2e08b080986cc3d8ca12eb809aa8310e7f5015d79e452c139185e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6c790704-0ec4-4bef-9945-5d4a3a441287.json and https://artists.proofprofile.net/proofs/artist/6c790704-0ec4-4bef-9945-5d4a3a441287.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).