Libraries tagged by content-credentials

Verifier for C2PA Content Credentials in pure PHP: JPEG, PNG, GIF, WebP, ISOBMFF (MP4, MOV, AVIF, HEIC), WAV, AVI, MP3 and FLAC, and plain text when turned on, with c2patool's verdict. Read and verify only; no signing, no keys, no network.

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PHP library for C2PA Content Credentials: build, sign, read and verify manifests, with machine-readable marking of AI-generated content (EU AI Act, Article 50).

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PHP 8.3+ native C2PA Content Credentials: read/validate manifests and sign Media Library images incl. derivatives.

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How a work was made, declared part by part in the IPTC Digital Source Type vocabulary: captured, made by people, edited or created with generative AI, or undeclared, with the AI-free view and the requirement a contest or a shop sets

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Official PHP SDK for the snapWONDERS API — steganography (hide & reveal), forensic media analysis, and format conversion.

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