ISRC USUM71215599
Verified recording
USUM71215599 is “Sometimes I'm Happy - Alternate Take” by Lester Young Quartet,
registered on the CopyrightChains blockchain with CopyrightID
0x8d62e2c4750281cd2db8d145b164006b106b76012c875eb308f7736ffb5f3cc6 and independently timestamped
in Bitcoin block 960494 on 2026-08-01.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71215599.
Recording identifiers
- ISRC
- USUM71215599
- Title
- Sometimes I'm Happy - Alternate Take
- Artist
- Lester Young Quartet
- CopyrightID (CopyrightChains transaction hash)
0x8d62e2c4750281cd2db8d145b164006b106b76012c875eb308f7736ffb5f3cc6
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-08-01T01:44:32+00:00
- Bitcoin block
- 960494
- Canonical record hash
sha256:f6b8f7f88f476bc5a12dcdcb0f9a05d7a675f95972816457ca662a1974eb68ef- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71215599
- Bitcoin block existence check
- https://blockstream.info/api/block/960494
Full record
Track page: Sometimes I'm Happy - Alternate Take · Machine-readable JSON-LD