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 0x3ec8bacd04bbdc566375074e6e99514d82211373a91d64a8abe828bad170b8a1. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4988f35-f571-4b86-852f-f854f42fa17d.json and https://artists.proofprofile.net/proofs/artist/c4988f35-f571-4b86-852f-f854f42fa17d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Generic Blues Jam Tracks In All 12 Keys Volume 1
Generic Blues Jam Tracks In All 12 Keys Volume 7
CB Style Rock and Roll Backing Tracks in All 12 Keys
Blues and Rock Style Bass and Drums Only Backing Tracks, Vol. 1
Funk Blues Style Backing Tracks: In All 12 Keys
Texas Shuffle Style Backing Tracks In All 12 Keys
Straight-8 Shuffle Blues Style Backing Tracks In All 12 Keys
Hard-Drivin' Blues Backing Tracks In All 12 Keys
8-Bar Blues Style Backing Tracks In All 12 Keys
Shuffle-Boogie Style Backing Tracks In All 12 Keys
Stop-Time Blues Style Backing Tracks In All 12 Keys
Chicago Blues Style Backing Tracks In All 12 Keys
Uptown Blues Style Backing Tracks In All 12 Keys
Blues-Rock Style Backing Tracks In All 12 Keys
16-Bar Blues Style Backing Tracks In All 12 Keys
Blues and Rock Backing Tracks in Key of A
Blues and Rock Backing Tracks in Key of E
Boogie-Woogie Style Backing Tracks In All 12 Keys
Downtown Blues Style Backing Tracks in All 12 Keys
Jazzy Blues Style Backing Tracks In All 12 Keys
Houserockin' Blues Backing Tracks In All 12 Keys
Blues and Rock Backing Tracks In Key of C
Slow Blues Style Backing Tracks In All 12 Keys
Blues and Rock Backing Tracks In Key of F