pay.e.cash

Universal eCash payment URLs use a BIP21 payload in the bip21 query parameter:

https://pay.e.cash?bip21=<bip21-uri>

See the BIP · eCash additions spec for supported parameters.

If the wallet app is expected to return to the originating browser page after the payment, append &b=1 to the link.

Wallet connect links (Android Cashtab)

To connect a user's wallet address from your web app on Android:

https://pay.e.cash/?connect=1&return_url=<https-url>&b=1

Your page stays open while Cashtab opens. After approval, Cashtab opens <return_url>#cashtab_connect=<ecash-address> in the browser and exits. Parse the hash on load (see parsePayEcashConnectCallback in cashtab-connect).

How to use pay.e.cash deep links in your App

You can programmatically generate intended txs for your users and encode them in a link. A user clicking the link will open the tx for their review and approval in Cashtab.

Example payment links

All examples use the same demo address; adjust bip21 for your integration.

Simple XEC send

Prepared XEC send with amount

XEC send with op_return_raw

Prepared XEC send with OP_RETURN payload

Token send

Prepared token send with token_id and token qty

Send XEC then return to the browser payment page

Prepared XEC send with amount an return to browser indicator

Landing page

Technical overview and supported wallets are on pay.e.cash.