Test credits only. Every valid intent stays Pending Sync. No settlement service is connected.
ECHO PAY · NEARBY / INTENT LAB
Echo Nearby
Internet optional.
Your intent. Your signature. Any carrier.
Carry a signed instruction between devices. Verify it locally, even without a connection.
Local verification
Awaiting a checkPending Sync
Run a check below. No current verification is displayed.
The Twin reflects your local check. You choose what to sign. A valid signature does not prove identity, funds or settlement.
How the signed handoff travels
- Agree on the receiver. Confirm full keys separately. In the signed exchange, the receiver creates a request and keeps its ID.
- Review and sign. The payer checks the amount, receiver and expiry, then explicitly authorizes the exact intent.
- Carry the same bytes. Use QR, an exported file or copied packet. A third carrier can pass it onward; the packet is readable.
- Check and retain. The receiver verifies locally and keeps an exported copy. Pending Sync remains pending; there is no settlement connection.
Prepare both devices before disconnecting. Scanning never approves an action. Open the two-device guide →
01 / YOUR TEMPORARY TEST KEY
A key you choose to create
Signing keys stay in this tab's memory. Closing or hiding the tab discards the key. Saved intents remain verifiable.
Confirm the full recipient key separately. A familiar name or a QR code does not establish who controls it.
02 / CREATE
Review before signing
Network: echo-demo-local · Asset: test-credit · Whole test credits
No intent prepared.
Pending Sync
This signature does not prove funds or settlement. The packet is readable by its carriers.
03 / VERIFY
Check the object yourself
Recipient checking uses this lab's test-credit network and your device clock. A key pin does not verify a person's identity.
No verification performed.
Technical verification details
Watch the signature hold
After a successful check, change the amount in a separate copy and see why its original signature no longer verifies.
04 / RETAINED OBJECTS
Saved pending intents
Public signed objects only; no private keys. Browser storage can be lost or changed. Export files you need to keep.