Overview
On-chain notarization for documents and data. Send a SHA-256 hash; receive a permanent, timestamped, independently verifiable blockchain record proving the content existed at this moment - plus a downloadable PDF Certificate of Existence. The document itself never leaves your system; only the hash is transmitted. Use for contracts, agreements, audit trails, IP protection, compliance records, and AI-output provenance. Anyone can verify a seal without trusting this service. $1.00 per seal, paid via x402 in USDC on Base.
Protocol
x402 (POST)
Price
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Payment Asset
USD Coin
Payment Network
eip155:8453
Category
verification/notary
Provider
Immuta
Source
bazaar
Indexed
2026-07-14 14:15:38
Health
Status
healthy
Latency (p50)
—
Uptime (30d)
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Reliability Score
—
Last Checked
Never
Last Healthy
Never
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
—
Asset Verified
—
Facilitator
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