A Hedera application can outsource the signing of its transactions to an external component.
This repo contains an example where the signer is on an external server providing access via web APIs. The client is an application creating the transaction and requesting a raw signature on the server. The client tries four transactions: a free transaction (balance query) and three paid transactions (account query, HBAR transfer, token creation).
This example derives from the simple REST signature provider example you can find in the Hedera™ Hashgraph JavaScript SDK repository.
Rename .env.example to .env and fill with correct values.
Run the server with:
npm run serverExample output:
> [email protected] server
> node src/server
Listening on localhost:3000Run the client with:
npm run clientExample output:
> [email protected] client
> node src/client
> Free query balance...
< Balance: 302914.69757639 ℏ
> Paid query account info...
< Key: 302a300506032b657003210097697c9a01c0274b049625fb6860a9acb2aaeb1cce5d04aeeb9fe5121131dd7a
> Paid transfer...
< Transfer successful? true
> Paid token creation...
< TokenId: 0.0.4409936