Dan Folke (March 11, 1906 – September 16, 1954) was a Danish composer, lyricist, publisher, and theater director. Biography Folke was born in Frederiksberg. He enrolled at Frederiksberg High School i
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 0xf8ce3ee66babee6820c92e55b784f8502b77751c7822f0b9f30ae479cf0ca764. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6125af9a-bada-42dd-a7be-7261509f5c37.json and https://artists.proofprofile.net/proofs/artist/6125af9a-bada-42dd-a7be-7261509f5c37.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Danske Revy (Den): 1930-1940, Vol. 3 (Revy 10)