The Strollers is a musical in two acts and a prologue with music by Ludwig Engländer and a book and lyrics by Harry B. Smith. Set in Austria, the work is based on Leopold Krenn and Karl Lindau's libre
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 0xb32ec96a5ac5714381222fe155da3a2a14bd67d6ec30efa9288b8a2aa3a0c23b. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2d06552-0d2a-4134-9060-23490c1d736e.json and https://artists.proofprofile.net/proofs/artist/b2d06552-0d2a-4134-9060-23490c1d736e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).