On-chain anchoring — the ownerless verifyhash registry on Polygon

Permissionless anchoring

An ownerless registry, live on Polygon.

Anchor a file or repository hash on-chain; anyone can later prove content is byte-for-byte what was anchored — trusting no server, admin, or key.

Polygon mainnet · chain 137

ContributionRegistry

No admin. No pause. No upgrade path. It never holds funds. Each hash anchors once, first-writer-wins, and can never be altered or deleted. That immutability is the product.

0x77d8eF881D5aeEda64788968D13f9146fE1A609B

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