Sealed Letters

Recording by August Wilhelmsson.

Recording identifiers

ISRC
SE5Q51700979
CopyrightID (CopyrightChains transaction hash)
0x617fa3b7ff57e6a6da928f9f66254bbc0bf98c8ff03d65ed9c2d77280a6e0fcd
Copyright registration time
2026-06-11T06:21:34+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T13:32:09Z
Bitcoin block
953520
Canonical record hash
sha256:cd9911abe846068e8832f08907be5fe7da47de60a45a951a1fe44f038cda97c6

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.