ISRC QZZ4D2400032
Verified recording
QZZ4D2400032 is “San Francisco Bay Blues - Live at University of Houston Coffee House 1970” by Guy Clark,
registered on the CopyrightChains blockchain with CopyrightID
0x494a81cde9737d3cef7e700ca9d9ea1b8e9433b2aae93485cf6a825ab4d0648d and independently timestamped
in Bitcoin block 960150 on 2026-07-29.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ4D2400032.
Recording identifiers
- ISRC
- QZZ4D2400032
- Title
- San Francisco Bay Blues - Live at University of Houston Coffee House 1970
- Artist
- Guy Clark
- CopyrightID (CopyrightChains transaction hash)
0x494a81cde9737d3cef7e700ca9d9ea1b8e9433b2aae93485cf6a825ab4d0648d
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-29T21:51:49+00:00
- Bitcoin block
- 960150
- Canonical record hash
sha256:5e54cd050b937dcd2e7bcfd69f0b52ae11c283dc7cf2eda90cc0ff5556a0daaa- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ4D2400032
- Bitcoin block existence check
- https://blockstream.info/api/block/960150
Full record
Track page: San Francisco Bay Blues - Live at University of Houston Coffee House 1970 · Machine-readable JSON-LD