Transactions backed by
cryptographic proof
Create immutable, tamper-evident records of agreements between parties. Every signature is Ed25519-signed and anchored in a Merkle tree.
Not a contract tool. Not a payment processor.
Pact proves the handshake happened — cryptographically, immutably, and verifiably.
Immutable Attestation
Both parties sign with Ed25519 keys. Once anchored, the record can never be altered or denied.
No Account Required
Counterparties can review and sign via a simple link. An ephemeral key is generated in the browser.
Dispute-Ready by Default
Every pact includes a timestamped event log, signed fulfillment attestations, and a full proof trail.
One-Time or Recurring
Single deliverables, ongoing vendor contracts, SLA checkpoints — all supported with periodic attestation.
ClearKey Bundle Export
Completed pacts export as standard VLI bundles — verifiable offline with the open-source ClearKey CLI.
Public Verification
Anyone with the pact ID can independently verify its authenticity — no login needed. Trust is public.
How it works
Four steps to a verified transaction.
Create Identity
Generate your SAPI identity — an Ed25519 keypair tied to your name.
Define Terms
Create a pact with terms, conditions, amounts, and deadlines.
Invite & Sign
Send a link to the counterparty. Both sides sign cryptographically.
Verify & Fulfill
Track conditions, attest to delivery, and resolve disputes — all provable.
Simple pricing
Free to start. Pay as you grow.
- ✓ SAPI Identity
- ✓ One-time pacts
- ✓ Public verification
- ✓ Guest invite links
- ✓ Everything in Starter
- ✓ Recurring pacts
- ✓ Bundle export
- ✓ Dispute management
- ✓ Everything in Pro
- ✓ Registry anchoring
- ✓ VAV integration
- ✓ Custom SLA
Ready to make trust verifiable?
Create your identity in 10 seconds. No credit card required.
Get Started Free