bitsms

bitsms.org

Send Bitcoin offline via SMS

Text a signed raw transaction to this number. Created for Orum Wallet.

How it works

Bitsms is not a wallet. Instead, it is an SMS to Bitcoin relay where you sign a transaction in your wallet and text it to this number. Most wallets allow you to sign raw transactions offline. Bitsms is open source and available on Github.

Example

0100000001f3f6a909f8521adb57d898d2985834e632374e770fd9e2b98656f1bf1fdfd427010000006b48304502203a776322ebf8eb8b58cc6ced4f2574f4c73aa664edce0b0022690f2f6f47c521022100b82353305988cb0ebd443089a173ceec93fe4dbfe98d74419ecc84a6a698e31d012103c5c1bc61f60ce3d6223a63cedbece03b12ef9f0068f2f3c4a7e7f06c523c3664ffffffff0260e31600000000001976a914977ae6e32349b99b72196cb62b5ef37329ed81b488ac063d1000000000001976a914f76bc4190f3d8e2315e5c11c59cfc8be9df747e388ac00000000

b138360800cdc72248c3ca8dfd06de85913d1aac7f41b4fa54eb1f5a4a379081

Once the transaction is sent successfuly, Bitsms replies with the transaction ID. If the same transaction has already been sent or contains errors, Bitsms will not reply.

Create a signed raw transaction

Here are instructions on signing a raw transaction for various wallets:

Split an SMS message

This is an upcoming feature to enable sending on devices that restrict sending SMS messages larger than 160 characters.