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DocAnchor Tamper-evident document time stamps

A tamper-evident time stamp for any document, checkable by anyone, with no crypto knowledge needed. Anchoring on the public XDC network is Coming soon.

Workspace プランFree document check works today; batch anchoring in WorkspaceDocWitness · Enterprise

Included in: Included from Solo once anchoring launches (coming soon): Solo 100 time stamps a month · Builder 1,000 · Pro 5,000 · Protocol 25,000 · Custom by quote

Get started

curl

H=(sha256sum invoice.pdf | cut -d' ' -f1)
curl -s https://feedplumb.jp/notary/v1/verify/H

Product page

What it does and how to start.

Open

DocAnchor API

6 endpoints, with curl examples.

Reference

Included in paid plans.