Symphony, Op. 21

Recording by Anton Webern.

Recording identifiers

ISRC
ITS041713752
CopyrightID (CopyrightChains transaction hash)
0x41f2018f702a62add4141a97be1756b707963c9aabff4a60b26ccb3aa608d03d
Copyright registration time
2026-07-07T15:15:35+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:4ef97a8d8ae765de244a0e6e2b32b01b2ab9f7ba41ae2b5a06ec1f686a390f6d

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.