The Sky Above (; ) is a 2010 Brazilian docudrama directed by Sérgio Borges. The film won five awards at the Brasilia Film Festival, including Best Picture. Awards 2011: Rotterdam International Film
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 0xb4655203090ff007cfc28447cb6c6d27b570433e8f7eacbf32bf7fb7d1ca7748. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/771e7789-3e65-416b-b03a-1a6c718b0cb9.json and https://artists.proofprofile.net/proofs/artist/771e7789-3e65-416b-b03a-1a6c718b0cb9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).