Princess Ida, Act III: No. 21, I Built Upon a Rock

Recording identifiers

ISRC

GBF076542022

CopyrightID (CopyrightChains transaction hash)

0x5aff2e3cef48b8b6c54f1bb45850817c3010bfdfcb6a7551a67048d84ff83326

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-08-01T04:30:37Z

Bitcoin block

960509

Canonical record hash

sha256:c4b8c8cec9e9677e496726648145875a300d98949fbe9fa8d51b00bf6c37a90f

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

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.