Avry () is a municipality in the district of Sarine in the canton of Fribourg in Switzerland. The municipality is the result of the 1 January 2001 union of Avry-sur-Matran and Corjolens.Amtliches Geme
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 0x24e4bc56e93bd54767e678445a5b761da2986ab002e3b648ea86b9faabdf299b. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb301023-ad90-4aaa-b1e3-270d0368e1ea.json and https://artists.proofprofile.net/proofs/artist/bb301023-ad90-4aaa-b1e3-270d0368e1ea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).