ISRC QMBZ91639451
Verified recording
QMBZ91639451 is “I Didn't Know What Time It Was” by Cedar Walton,
registered on the CopyrightChains blockchain with CopyrightID
0x570fe4393336ee7a0f029f0639fb24d1d82d24461af3cc5f1257874a21dac2b8 and independently timestamped
in Bitcoin block 960240 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ91639451.
Recording identifiers
- ISRC
- QMBZ91639451
- Title
- I Didn't Know What Time It Was
- Artist
- Cedar Walton
- CopyrightID (CopyrightChains transaction hash)
0x570fe4393336ee7a0f029f0639fb24d1d82d24461af3cc5f1257874a21dac2b8
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T09:57:33+00:00
- Bitcoin block
- 960240
- Canonical record hash
sha256:993fddaa96f8de71a1831791fbe8e41f9844d335139d275b99906a75b95ea65f- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ91639451
- Bitcoin block existence check
- https://blockstream.info/api/block/960240
Full record
Track page: I Didn't Know What Time It Was · Machine-readable JSON-LD