Silla (; Old Korean: 徐羅伐, Yale: Syerapel, RR: Seorabeol; IPA: ) was a Korean kingdom that existed between 57 BCE57 BCE according to the Samguk sagi; however Seth 2010 notes that "these dates are dutif
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 0x905e5283b764ed810038ce63426c6146eabda994c02fa380d37d8d9a12912fb9. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2451dc83-59f0-451e-9f08-d30ddcb52618.json and https://artists.proofprofile.net/proofs/artist/2451dc83-59f0-451e-9f08-d30ddcb52618.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).