ISRC ITBZ81605666
Verified recording
ITBZ81605666 is “Impromptu in 2 Keys” by George Gershwin,
registered on the CopyrightChains blockchain with CopyrightID
0x1bf809f21461afe52d6c7b8998e29b723eb1b4e8cf7de2e9d350c1427c49b1e2 and independently timestamped
in Bitcoin block 960441 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81605666.
Recording identifiers
- ISRC
- ITBZ81605666
- Title
- Impromptu in 2 Keys
- Artist
- George Gershwin
- CopyrightID (CopyrightChains transaction hash)
0x1bf809f21461afe52d6c7b8998e29b723eb1b4e8cf7de2e9d350c1427c49b1e2
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T17:29:52+00:00
- Bitcoin block
- 960441
- Canonical record hash
sha256:5192c5dd7f040e3ffcabab8b2eb0adf8a7b58a964a0b6118f776b0e470f81328- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ81605666
- Bitcoin block existence check
- https://blockstream.info/api/block/960441