A mighty fortress (Ein feste Burg ist unser Gott)

Recording identifiers

ISRC

GBAKR0012603

Release date of the album this recording appears on

2000-08-01

CopyrightID (CopyrightChains transaction hash)

0xca1ac4189bd8cf8139612cdf5472f2195bec97af7e328492df51a0aece4f47b6

Copyright registration time

2026-06-25T22:48:25+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:55:08Z

Bitcoin block

956304

Canonical record hash

sha256:b8b13012de79ee694ff6471201c4f4da661ed042c935aaf435f4ae0d5f78b1ca

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBAKR0012603

What this proof establishes

This recording was released in 2000, 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.