Ich hatte viel Bekümmernis BWV 21: Seufzer, Tränen, Kummer, Not

Recording identifiers

ISRC

NLB151100737

Release date of the album this recording appears on

2011-09-27

CopyrightID (CopyrightChains transaction hash)

0x37ac90486306c98e6a1e6b0e5a22827b2bc14839b18f2ed1204307ac9fc66417

Copyright registration time

2026-07-30T11:47:23+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T12:06:10Z

Bitcoin block

960254

Canonical record hash

sha256:0042c9448b816527d812b779a36570ad0d394a4bfb8a6ca81a2bf3f846a73445

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC NLB151100737

What this proof establishes

This recording was released in 2011, 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.