Anna Vogelzang (born 26 February 1985) is an American singer-songwriter and guitarist. Based in Chicago, she composes and performs on guitar, ukulele, baritone ukulele, banjo, and kalimba, and has bee
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 0xaf210fa151460056978ed293a7d60f14ad6e5ca3915caa35f29f8621ec7bcb27. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cae98d02-d418-4fd7-ad10-4b1d56ea43a6.json and https://artists.proofprofile.net/proofs/artist/cae98d02-d418-4fd7-ad10-4b1d56ea43a6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).