Sahra is the third studio album from Algerian raï artist Khaled, released in 1996. It was the artist's biggest production to date, being co-produced by Philippe Eidel, Don Was, Jean-Jacques Goldman an
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 0xad8d2811f7e89dfa5b7e0a9038a0f09f06eea6c1e38eaa16229131af418caadc. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd75317e-ec32-4fa2-aad9-2f869cba0008.json and https://artists.proofprofile.net/proofs/artist/fd75317e-ec32-4fa2-aad9-2f869cba0008.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).