Andreas Hammerschmidt (1611 or 1612 – 29 October 1675) was a German Bohemian composer and organist of the early to middle Baroque era. He was one of the most significant and popular composers of sacre
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 0x3879c25326634b32879c4d7986d2efecf257fff68ef01e57ddc7e11a2ceea278. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7939d0dd-cdee-4e93-ac2f-1d837510bf01.json and https://artists.proofprofile.net/proofs/artist/7939d0dd-cdee-4e93-ac2f-1d837510bf01.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).