In dulci jubilo (Nun singet und seid froh)

Recording identifiers

ISRC

DEA620101306

Release date of the album this recording appears on

1991-09-11

CopyrightID (CopyrightChains transaction hash)

0xaeeb22d0d1dbc70d6b4866dbb70e321d66148edf79f601ba06cbde2f61a4fb47

Copyright registration time

2026-07-31T02:18:09+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T02:51:48Z

Bitcoin block

960337

Canonical record hash

sha256:8606681fccdd833508a6835667e81f66e5692aaf54e4407f5d1128e4320bf9ec

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEA620101306

What this proof establishes

This recording was released in 1991, 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.