ISRC NLL6R1900511
Verified recording
NLL6R1900511 is “Popp: Sandmännchen: Humoreske für Flöte und Klavier, Op. 471, No. 4” by Wilhelm Popp,
registered on the CopyrightChains blockchain with CopyrightID
0x55b8f39f8193bec80f3b1b784e21ff5ebf74c26e6b86482a1d7fceb6be9f9cea 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/NLL6R1900511.
Recording identifiers
- ISRC
- NLL6R1900511
- Title
- Popp: Sandmännchen: Humoreske für Flöte und Klavier, Op. 471, No. 4
- Artist
- Wilhelm Popp
- CopyrightID (CopyrightChains transaction hash)
0x55b8f39f8193bec80f3b1b784e21ff5ebf74c26e6b86482a1d7fceb6be9f9cea
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:3f0977630c955d0586bc17199bb30a05074663d1c6b928ae95dc236228aad938- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLL6R1900511
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: Popp: Sandmännchen: Humoreske für Flöte und Klavier, Op. 471, No. 4 · Machine-readable JSON-LD