Um fado só para ti (Poema tristonho)

Recording identifiers

ISRC

PTKE11000004

Release date of the album this recording appears on

2010-04-19

CopyrightID (CopyrightChains transaction hash)

0x91d381daef0f437112225984e6ada5bd57e4f30d5fb7edcb41a67e722787bd00

Copyright registration time

2026-07-07T22:38:00+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:22:41Z

Bitcoin block

957120

Canonical record hash

sha256:4fd3bd3184cadc516c27699cd77e2b1107095981431446fc41bda2e4816aa103

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC PTKE11000004

What this proof establishes

This recording was released in 2010, 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.