Sem Palavras

Recording by Marta Pereira da Costa.

Recording identifiers

ISRC
ES69I2401484
CopyrightID (CopyrightChains transaction hash)
0xdfd2ceab5fc7e54540f6f2ce70dba698cd161953f85eff95c34909c89515e3f4
Copyright registration time
2026-07-29T13:32:38+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-29T14:28:24Z
Bitcoin block
960117
Canonical record hash
sha256:239b8885a631ebb2a5cc19085adc74d00d772b3fabae2fddb4c2dfdf22a00465

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.