ISRC USL4Q1904262
Verified recording
USL4Q1904262 is “A World First” by David Hirschfelder,
registered on the CopyrightChains blockchain with CopyrightID
0x288fa4e50c402ca0f8b9778eca64e4d1f7d2d43e37d4c2a7da22c95b6601e408 and independently timestamped
in Bitcoin block 960487 on 2026-08-01.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q1904262.
Recording identifiers
- ISRC
- USL4Q1904262
- Title
- A World First
- Artist
- David Hirschfelder
- CopyrightID (CopyrightChains transaction hash)
0x288fa4e50c402ca0f8b9778eca64e4d1f7d2d43e37d4c2a7da22c95b6601e408
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-08-01T00:15:43+00:00
- Bitcoin block
- 960487
- Canonical record hash
sha256:02dd4a368bd9c6f2330d915fbb6a6b55dee58945c7db3e380989fda0896ecbb9- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q1904262
- Bitcoin block existence check
- https://blockstream.info/api/block/960487