The Secrets were an American girl group from Cleveland, Ohio. The group first performed under the name The Sonnets, named after the Sonnet manufactured piano. They were offered a local gig supporting
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 0xf41626d171b7c54aaa7a234a2fecb5c3eaec3ad21341c2f805e514c2318af466. 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/b1487039-da01-471c-b2af-f97e85770c1f.json and https://artists.proofprofile.net/proofs/artist/b1487039-da01-471c-b2af-f97e85770c1f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).