Yellowbirds was an American indie rock band active from 2009 to late 2014. It was first formed by guitarist, vocalist, and songwriter Sam Cohen as a solo project, shortly after the dissolution of Cohe
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 0x811af9b38bdd48245b2b7f506e2d8a6630857a7ffc49cdf0a587493f6f98caab. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47dd1cc8-e98c-4aa3-a3b2-7c55c9c9f455.json and https://artists.proofprofile.net/proofs/artist/47dd1cc8-e98c-4aa3-a3b2-7c55c9c9f455.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).