Client

ICTech gRPC #

ICTech exposes gRPC endpoints for all the integrated ICTech SDK modules. This makes it easier for wallets and block explorers to interact with the Proof-of-Stake logic and native ICTech transactions and queries.

ICTech gRPC-Gateway (HTTP REST) #

gRPC-Gateway reads a gRPC service definition and generates a reverse-proxy server which translates RESTful JSON API into gRPC. With gRPC-Gateway, users can use REST to interact the ICTech gRPC service.

See the list of supported gRPC-Gateway API endpoints for the ICTech testnet here.

Ethereum JSON-RPC #

ICTech supports most of the standard JSON-RPC APIs to connect with existing Ethereum-compatible web3 tooling.

::: tip Check out the list of supported JSON-RPC API [endpoints] and namespaces. :::

Ethereum Websocket #

Then, start a websocket subscription with ws

# connect to tendermint websocet at port 8546 as defined above
ws ws://localhost:8546/

# subscribe to new Ethereum-formatted block Headers
> {"id": 1, "method": "eth_subscribe", "params": ["newHeads", {}]}
< {"jsonrpc":"2.0","result":"0x44e010cb2c3161e9c02207ff172166ef","id":1}

Tendermint Websocket #

Tendermint Core provides a Websocket connection to subscribe or unsubscribe to Tendermint ABCI events.

::: tip For more info about the how to subscribe to events, please refer to the official Tendermint documentation. :::

{
    "jsonrpc": "2.0",
    "method": "subscribe",
    "id": "0",
    "params": {
        "query": "tm.event='<event_value>' AND eventType.eventAttribute='<attribute_value>'"
    }
}

List of Tendermint Events #

The main events you can subscribe to are:

NewBlock: Contains events triggered during BeginBlock and EndBlock.
Tx: Contains events triggered during DeliverTx (i.e. transaction processing).
ValidatorSetUpdates: Contains validator set updates for the block.

::: tip

👉 The list of events types and values for each ICTech SDK module can be found in the [Modules Specification]section. Check the Events page to obtain the event list of each supported module on ICTech. :::

List of all Tendermint event keys:

Event Type

Example #

ws ws://localhost:26657/websocket
> { "jsonrpc": "2.0", "method": "subscribe", "params": ["tm.event='ValidatorSetUpdates'"], "id": 1 }

Example response:

{
    "jsonrpc": "2.0",
    "id": 0,
    "result": {
        "query": "tm.event='ValidatorSetUpdates'",
        "data": {
            "type": "tendermint/event/ValidatorSetUpdates",
            "value": {
              "validator_updates": [
                {
                  "address": "09EAD022FD25DE3A02E64B0FE9610B1417183EE4",
                  "pub_key": {
                    "type": "tendermint/PubKeyEd25519",
                    "value": "ww0z4WaZ0Xg+YI10w43wTWbBmM3dpVza4mmSQYsd0ck="
                  },
                  "voting_power": "10",
                  "proposer_priority": "0"
                }
              ]
            }
        }
    }
}

CLI #

Users can use the ICTech binary to interact directly with an ICTech node though the CLI.

::: tip 👉 To use the CLI, you will need to provide a Tendermint RPC address for the --node flag. Look for a publicly available addresses for testnet and mainnet in the Quick Connect page. :::

Transactions: ICTech tx

The list of available commands, as of v3.0.0, are:

Available Commands:
  authz               Authorization transactions subcommands
  bank                Bank transaction subcommands
  broadcast           Broadcast transactions generated offline
  crisis              Crisis transactions subcommands
  decode              Decode a binary encoded transaction string
  distribution        Distribution transactions subcommands
  encode              Encode transactions generated offline
  erc20               erc20 subcommands
  evidence            Evidence transaction subcommands
  evm                 evm transactions subcommands
  feegrant            Feegrant transactions subcommands
  gov                 Governance transactions subcommands
  ibc                 IBC transaction subcommands
  ibc-transfer        IBC fungible token transfer transaction subcommands
  multisign           Generate multisig signatures for transactions generated offline
  multisign-batch     Assemble multisig transactions in batch from batch signatures
  sign                Sign a transaction generated offline
  sign-batch          Sign transaction batch files
  slashing            Slashing transaction subcommands
  staking             Staking transaction subcommands
  validate-signatures validate transactions signatures
  vesting             Vesting transaction subcommands

Queries: ICTech query

The list of available commands, as of v3.0.0, are:

Available Commands:
  account                  Query for account by address
  auth                     Querying commands for the auth module
  authz                    Querying commands for the authz module
  bank                     Querying commands for the bank module
  block                    Get verified data for a the block at given height
  claims                   Querying commands for the claims module
  distribution             Querying commands for the distribution module
  epochs                   Querying commands for the epochs module
  erc20                    Querying commands for the erc20 module
  evidence                 Query for evidence by hash or for all (paginated) submitted evidence
  evm                      Querying commands for the evm module
  feegrant                 Querying commands for the feegrant module
  feemarket                Querying commands for the fee market module
  gov                      Querying commands for the governance module
  ibc                      Querying commands for the IBC module
  ibc-transfer             IBC fungible token transfer query subcommands
  incentives               Querying commands for the incentives module
  inflation                Querying commands for the inflation module
  params                   Querying commands for the params module
  recovery                 Querying commands for the recovery module
  slashing                 Querying commands for the slashing module
  staking                  Querying commands for the staking module
  tendermint-validator-set Get the full tendermint validator set at given height
  tx                       Query for a transaction by hash, "<addr>/<seq>" combination or comma-separated signatures in a committed block
  txs                      Query for paginated transactions that match a set of events
  upgrade                  Querying commands for the upgrade module
  vesting                  Querying commands for the vesting module

::: tip Note: When querying Ethereum transactions versus ICTech transactions, the transaction hashes are different. When querying Ethereum transactions, users need to use event query. Here’s an example with the CLI:

curl -X GET "http://localhost:26657/tx_search?query=ethereum_tx.ethereumTxHash%3D0x8d43464891fac6c113e809e14dff1a3e608eae124d629799e42ca0e36562d9d7&prove=false&page=1&per_page=30&order_by=asc" -H "accept: application/json"

:::

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