The Passing Measures

Recording by David Lang.

Recording identifiers

ISRC
US3Q50100301
CopyrightID (CopyrightChains transaction hash)
0x0d39030824d3c72c1ba6ee35ddbc7c41cb6a003fb0f213b567d696db44723675
Copyright registration time
2026-07-31T10:50:12+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T12:24:41Z
Bitcoin block
960397
Canonical record hash
sha256:48b77d327760a99b18215e1581b61dda90a439f89ab2ce43a3df31eef24d5000

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.