rootulp

Inter Chain Accounts

Notes from creating and testing ICA on testnets.

Prerequisites

1. Start a Cosmos Hub Testnet node and sync it to the tip.
2. Start a Arabica node and sync it to the tip.
3. Install and configure Hermes to relay between these two chains.
   1. Configure Hermes keys with an account on both chains. Get both accounts funded via Discord wallets.

rootulp

Voting Period

Network	Voting Period (nanoseconds)	Voting period (days)
arabica-11	604800000000000	7
mocha-4	86400000000000	1
celestia	604800000000000	7

Reference

rootulp

#!/bin/sh

# Stop script execution if an error is encountered
set -o errexit
# Stop script execution if an undefined variable is used
set -o nounset

CHAIN_ID="mocha-4"
NODE_NAME="node-name"
SEEDS="[email protected]:26656,258f523c96efde50d5fe0a9faeea8a3e83be22ca@seed.mocha-4.celestia.aviaone.com:20279,5d0bf034d6e6a8b5ee31a2f42f753f1107b3a00e@celestia-testnet-seed.itrocket.net:11656,7da0fb48d6ef0823bc9770c0c8068dd7c89ed4ee@celest-test-seed.theamsolutions.info:443"

rootulp

#!/bin/sh

# Stop script execution if an error is encountered
set -o errexit
# Stop script execution if an undefined variable is used
set -o nounset

CHAIN_ID="arabica-11"
NODE_NAME="node-name"
SEEDS="827583022cc6ce65cf762115642258f937c954cd@validator-1.celestia-arabica-11.com:26656,74e42b39f512f844492ff09e30af23d54579b7bc@validator-2.celestia-arabica-11.com:26656,00d577159b2eb1f524ef9c37cb389c020a2c38d2@validator-3.celestia-arabica-11.com:26656,b2871b6dc2e18916d07264af0e87c456c2bba04f@validator-4.celestia-arabica-11.com:26656"

rootulp

#!/bin/bash

SNAP_RPC="https://celestia-rpc.polkachu.com:443"

LATEST_HEIGHT=$(curl -s $SNAP_RPC/block | jq -r .result.block.header.height); \
BLOCK_HEIGHT=$((LATEST_HEIGHT - 2000)); \
TRUST_HASH=$(curl -s "$SNAP_RPC/block?height=$BLOCK_HEIGHT" | jq -r .result.block_id.hash)

sed -i.bak -E "s|^(enable[[:space:]]+=[[:space:]]+).*$|\1true| ; \
s|^(rpc_servers[[:space:]]+=[[:space:]]+).*$|\1\"$SNAP_RPC,$SNAP_RPC\"| ; \

rootulp

#!/bin/sh

# Stop script execution if an error is encountered
set -o errexit
# Stop script execution if an undefined variable is used
set -o nounset

if ! [ -x "$(command -v celestia-appd)" ]
then
    echo "celestia-appd could not be found. Please install the celestia-appd binary using 'make install' and make sure the PATH contains the directory where the binary exists. By default, go will install the binary under '~/go/bin'"

rootulp

{
  "app_hash": "",
  "app_state": {
    "auth": {
      "accounts": [
        {
          "@type": "/cosmos.auth.v1beta1.ModuleAccount",
          "base_account": {
            "account_number": "3",
            "address": "celestia1fl48vsnmsdzcv85q5d2q4z5ajdha8yu3y3clr6",

rootulp

#!/bin/sh

# Stop script execution if an error is encountered
set -o errexit
# Stop script execution if an undefined variable is used
set -o nounset

CHAIN_ID="private"
KEY_NAME="validator"
KEYRING_BACKEND="test"

rootulp

#!/bin/sh

# Stop script execution if an error is encountered
set -o errexit
# Stop script execution if an undefined variable is used
set -o nounset

# Prerequisite: prior to running this script, start a single node devnet with ./scripts/single-node.sh
CHAIN_ID="private"
KEY_NAME="validator"

rootulp

package main

import "fmt"

// utiaPerTia is the number of utia in one TIA
// see https://docs.celestia.org/learn/tia#tia-display-token
const utiaPerTia = int64(1_000_000)

func main() {
	// feel free to modify utia