Den förlorade sonen svit: VI. Polka från Roslagen

Recording by Hugo Alfvén.

Recording identifiers

ISRC
HKI199314611
Release date of the album this recording appears on
2010-05-11
CopyrightID (CopyrightChains transaction hash)
0xb059e46a4ea7ec43fdcc772b0edee921c97e35dfff0a3b9d158e9b7a7d08cef5
Copyright registration time
2026-03-20T05:13:26+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T12:47:07Z
Bitcoin block
953513
Canonical record hash
sha256:5abf102c7130a63b3623f832dbecca11c24cc208fa61adba2b85fbe04af15b81

What this proof establishes

This recording was released in 2010, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and ISRC is the stable recording-level bridge from that source corpus to the authoritative cc-db-prod track record.

CopyrightChains and Bitcoin OpenTimestamps make the exact committed record independently verifiable today. The cryptographic proof does not by itself establish authorship or ownership of the underlying recording.

Read the complete pre-generative-AI provenance and verification method.