Prologue

Recording by Leonard Bernstein.

Recording identifiers

ISRC
USHR12142265
Release date of the album this recording appears on
2021-12-03
CopyrightID (CopyrightChains transaction hash)
0x47ef4b9d4866c550e97958a8d8c3440ece0b58018ff7dea0dc6542f053ea65be
Copyright registration time
2026-06-06T16:31:49+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T12:53:06Z
Bitcoin block
953515
Canonical record hash
sha256:c09b492532ce2077fc9b5504f2d928e5fc6f229d7ce657232a6cf649d7906dc1

What this proof establishes

This recording was released in 2021, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.