Den förlorade sonen Suite: Polka from "Roslagen"

Recording by Hugo Alfvén.

Recording identifiers

ISRC
HKI199314611
CopyrightID (CopyrightChains transaction hash)
0xb059e46a4ea7ec43fdcc772b0edee921c97e35dfff0a3b9d158e9b7a7d08cef5
Copyright registration time
2026-01-28T21:40:05+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:c2af6b93fed74e79e1b428338e00438ef5764cb555a0dc29d0d900c46a5326c5

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. 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.