South Arcade are an English rock band from Oxford. Formed in 2021, the band went viral for videos of their band practices. Their 2005 EP was inspired by various genres and artists from the 2000s and w
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 0xc2caeaaf7d00ab4d57e3672c0b4c53189fbaf7eaf823afe67cb12978b57997d0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48fb8db8-b4f6-466b-8293-cf586f1f4a41.json and https://artists.proofprofile.net/proofs/artist/48fb8db8-b4f6-466b-8293-cf586f1f4a41.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).