Symphony No. 7: I. Langsam

Recording by Gustav Mahler.

Recording identifiers

ISRC
QM6N21725594
CopyrightID (CopyrightChains transaction hash)
0x26c9278f905c6884d2e39a141bb7570dcf93e9bfb7f1d396e3be470bbbb4a5e1
Copyright registration time
2026-07-30T01:07:42+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T01:32:48Z
Bitcoin block
960185
Canonical record hash
sha256:b8dfb4abb9bd45ddaacdb8fe463814df215162e9b0b8c479bc48c2c548d7e8f6

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.