The Typewriter

Recording by Hugo Alfvén.

Recording identifiers

ISRC
SEBAA1400809
CopyrightID (CopyrightChains transaction hash)
0xb36c2987316e003a5e98a29cc75e94495d00e440094387775243b7ddcc63af16
Copyright registration time
2026-03-06T19:54:16+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T12:47:07Z
Bitcoin block
953513
Canonical record hash
sha256:f99e0f23f9a372d9ae4b084d6863a9c8fcde3f6931994ad4583984603aafd9b2

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.