thumb|upright|Sylvie Bodorová Sylvie Bodorová (born 31 December 1954, České Budějovice) is a Czech composer. During a career spanning from the late 1970s to the present day she has composed a large nu
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 0x52291f26e6d2a8f67a0913aebbeeca13484356a8b534040df24652671675826b. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08f2e4ed-feb6-4559-bce7-b64afa152c69.json and https://artists.proofprofile.net/proofs/artist/08f2e4ed-feb6-4559-bce7-b64afa152c69.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).