ISRC US7SF1352955
Verified recording
US7SF1352955 is “Life Saver Blues - 1927 Version” by Lonnie Johnson,
registered on the CopyrightChains blockchain with CopyrightID
0x2f7f3d2d63297941e180c94b30b13deda2970c0e7ce19f5110ec19e37eb8906a and independently timestamped
in Bitcoin block 957118 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7SF1352955.
Recording identifiers
- ISRC
- US7SF1352955
- Title
- Life Saver Blues - 1927 Version
- Artist
- Lonnie Johnson
- CopyrightID (CopyrightChains transaction hash)
0x2f7f3d2d63297941e180c94b30b13deda2970c0e7ce19f5110ec19e37eb8906a
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:f1900119a3dcd7f29d35731c07c0cdd5e2628d06a42e78ff14b814fbda99e442- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7SF1352955
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: Life Saver Blues - 1927 Version · Machine-readable JSON-LD