Kudai are a Chilean pop rock band from Santiago, Chile, formed in 2003. The group is composed of Pablo Holman, Bárbara Sepúlveda, Tomás Manzi, and Nicole Natalino, who left the group in 2006 citing pe
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 0x0bf8b4c8b233fd6534d52d6865cf5918fce718581919098663be9e0896b53c92. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d2a3568-1660-459e-9ed1-5ba22801cbdc.json and https://artists.proofprofile.net/proofs/artist/7d2a3568-1660-459e-9ed1-5ba22801cbdc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).