Piano Y Violin

Recording by Guillermo Rubalcaba.

Recording identifiers

ISRC
DEE790517200
CopyrightID (CopyrightChains transaction hash)
0x90e154cac33e371ed89d4d84e56ddc0897180ae301546c3a463a17cb24abc4e1
Copyright registration time
2026-07-07T08:11:12+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:054d81fc0b3220daead777811af03972ae90ca00aeaed0f06a4ce1c52ca160bf

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.