Kristali (; trans. The Crystals) were a Serbian pop rock band formed in Belgrade in 1993. The group gained mainstream popularity in mid-1990s with their britpop-influenced pop rock sound, scoring seve
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 0x1136d63982bdb775418760f77c2b3b06fff63a25381f7e887ebdb433c2b4f77c. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cd8a17b1-aaa2-4d8e-a91f-326df8355878.json and https://artists.proofprofile.net/proofs/artist/cd8a17b1-aaa2-4d8e-a91f-326df8355878.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).