Spring and Fall

Recording by Matthew Marcus.

Recording identifiers

ISRC
USPMZ2418609
CopyrightID (CopyrightChains transaction hash)
0x5da5820b7de180dae1c681db0412b7f44840700773ac4f15583702b9529f59ca
Copyright registration time
2026-07-07T17:41:57+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:22:41Z
Bitcoin block
957120
Canonical record hash
sha256:ea2e7ea41542b12a145586ad8e693660405a5f1bfd2a30b3d73f37b6b9866473

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.