Your first transaction

Send 1 usaf to yourself on testnet. Same operation on every platform tab below.

Constants (all platforms):

Name	Value
`CHAIN_ID`	`safro-testnet-1`
`RPC`	`https://rpc.testnet.safrochain.com:443`
`REST`	`https://rest.testnet.safrochain.com`
`DENOM`	`usaf`

Prerequisites: funded testnet address.

Web (TypeScript)
React Native
Flutter (CosmJS)
CLI (dev)

import { DirectSecp256k1HdWallet } from "@cosmjs/proto-signing";
import { SigningStargateClient, assertIsDeliverTxSuccess } from "@cosmjs/stargate";

const RPC = "https://rpc.testnet.safrochain.com:443";
const CHAIN_ID = "safro-testnet-1";
const DENOM = "usaf";

// Dev only: use Cosmos Kit offline signer in production browser apps.
const wallet = await DirectSecp256k1HdWallet.fromMnemonic(process.env.MNEMONIC!, {
  prefix: "addr_safro",
});
const [{ address }] = await wallet.getAccounts();

const client = await SigningStargateClient.connectWithSigner(RPC, wallet, {
  gasPrice: { denom: DENOM, amount: "0.05" },
});

const res = await client.sendTokens(address, address, [{ denom: DENOM, amount: "1" }], "auto", "first tx");
assertIsDeliverTxSuccess(res);
console.log(res.transactionHash);

Production web apps: connect via Cosmos Kit instead of a mnemonic.

import * as SecureStore from "expo-secure-store";
import { DirectSecp256k1HdWallet } from "@cosmjs/proto-signing";
import { SigningStargateClient, assertIsDeliverTxSuccess } from "@cosmjs/stargate";

const RPC = "https://rpc.testnet.safrochain.com:443";
const DENOM = "usaf";

const mnemonic = await SecureStore.getItemAsync("safro_mnemonic");
const wallet = await DirectSecp256k1HdWallet.fromMnemonic(mnemonic!, { prefix: "addr_safro" });
const [{ address }] = await wallet.getAccounts();

const client = await SigningStargateClient.connectWithSigner(RPC, wallet, {
  gasPrice: { denom: DENOM, amount: "0.05" },
});

const res = await client.sendTokens(address, address, [{ denom: DENOM, amount: "1" }], "auto", "first tx");
assertIsDeliverTxSuccess(res);

import { DirectSecp256k1HdWallet } from '@cosmjs/proto-signing';
import { SigningStargateClient, assertIsDeliverTxSuccess } from '@cosmjs/stargate';

const RPC = 'https://rpc.testnet.safrochain.com:443';
const wallet = await DirectSecp256k1HdWallet.fromMnemonic(mnemonic, { prefix: 'addr_safro' });
const [{ address }] = await wallet.getAccounts();

const client = await SigningStargateClient.connectWithSigner(RPC, wallet, {
  gasPrice: { denom: 'usaf', amount: '0.05' },
});

const res = await client.sendTokens(address, address, [{ denom: 'usaf', amount: '1' }], 'auto', 'first tx');
assertIsDeliverTxSuccess(res);

Run CosmJS in a JS bridge (flutter_js) or use Cosmos Kit + WalletConnect for external wallets. See Flutter guide.

ADDR=$(safrochaind keys show dev -a --keyring-backend file)

safrochaind tx bank send dev "$ADDR" 1usaf \
  --chain-id safro-testnet-1 \
  --node https://rpc.testnet.safrochain.com:443 \
  --gas auto --gas-adjustment 1.3 \
  --gas-prices 0.05usaf \
  --keyring-backend file \
  --yes

Next steps

Signing overview: full sign and broadcast flow
Simulate gas and fees

Next steps​

Next steps