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Registering and voting network proposals

Registering Proposal in the Network

Registering a network proposal requires signing a transaction calling the registerProposal method of the governance contract. The ABI of the registerProposal method is as follow:
{
"inputs": [
{ "name": "title", "type": "str" },
{ "name": "description", "type": "str" },
{ "name": "value", "type": "bytes" }
],
"name": "registerProposal",
"outputs": [],
"payable": "0x1",
"type": "function"
}
The registerProposal method has 3 defined inputs:
  • title: this input receives a string and defines the title of the proposal.
  • description: this input recieves a string and defines a description for the proposal.
  • value: this input receives a value of type byte and it is the stringified JSON object of your type of proposal converted into a hex hash.
Both title and description input are values of type string, for the case of the value input depending on your type of proposal (refer to the previous section Types of Proposals) you would need to create the correct hex hash depending on the proposal type. For example a text proposal with the following structure:
{
"name": "text",
"value": {
"text": "This is a text proposal"
}
}
After converting into a hex hash the resulting value would be:
0x5b7b226e616d65223a2274657874222c2276616c7565223a7b2274657874223a2254686973206973206120746578742070726f706f73616c227d7d5d
The signed RPC call for registering this sample text proposal would be the following:
{
to: 'cx0000000000000000000000000000000000000001', // governance contract
from: 'hx1223f323..', // Validator wallet registering the proposal
nid: '0x2', // network identifier
version: '0x3',
timestamp: '0x5f9b6322ab100',
stepLimit: '0x7a1200',
value: '0x56bc75e2d63100000', // cost for submitting proposal (100 icx)
nonce: '0x1',
dataType: 'call',
data: {
method: 'registerProposal', // method name
params: {
title: 'Proposal title',
description: 'Proposal description',
value: '0x5b7b226e616d65223a2274657874222c2276616c7565223a7b2274657874223a2254686973206973206120746578742070726f706f73616c227d7d5d'
}
},
signature: '/moH05QRHTofZKACOG25Wn18Ep7Xm3TCkZLgL5Lv4B1D1+tRzkiEUTCOyoucxMBGac7+pgadPjmULICMWtV8tAA='
}

Fetching Proposals from the Network

To fetch a proposal from the chain we need the id of the proposal (this is the transaction hash generated when the proposal was registered) and we call the getProposal method of the governance contract using this id as an input.
The following is an example of a call with the getProposal method
curl -X POST -H 'Content-Type' --data '{"jsonrpc":"2.0","method":"icx_call","id":365,"params":{"to":"cx0000000000000000000000000000000000000001","dataType":"call","data":{"method":"getProposal","params": {"id": "0x08a4eccb51132579d992752c477a677e60e9e25fec3bbf3dbc2cacff42499efd"}}}}' https://api.espanicon.team/api/v3
response
{
"jsonrpc": "2.0",
"result": {
"apply": {
"address": "hxfba37e91ccc13ec1dab115811f73e429cde44d48",
"id": "0x351ed564f4bed35ad9656f224c1eb2252635cecb7865c225bb5391da897f615c"
,
"name": "Lydia Labs",
"timestamp": "0x5eda71f4287ea"
},
"contents": {
"description": "CPS Treasury SCORE network update to support new features"
,
"title": "CPS Treasury SCORE network update",
"type": "0x9",
"value": {
"data": "[{\"name\":\"networkScoreUpdate\",\"value\":{\"address\":\"cxdca1178010b5368aea929ad5c06abee64b91acc2\",\"content\":\"0x000232...223\"}}]"
}
},
"endBlockHeight": "0x377ca12",
"id": "0x08a4eccb51132579d992752c477a677e60e9e25fec3bbf3dbc2cacff42499efd",
"proposer": "hxfba37e91ccc13ec1dab115811f73e429cde44d48",
"proposerName": "Lydia Labs",
"startBlockHeight": "0x37497de",
"status": "0x1",
"vote": {
"agree": {
"amount": "0xb4c744f99775c3b654fb04",
"list": [
{
"address": "hxfba37e91ccc13ec1dab115811f73e429cde44d48",
"amount": "0x13219c178e102236bc0000",
"id": "0x43c6db10526eca375e688b9e644b11547734d32dd56fe2839d6a72770f35ca72",
"name": "Lydia Labs",
"timestamp": "0x5ed7be9e09aa0"
},
...
]
},
"disagree": { "amount": "0x0", "list": [] },
"noVote": {
"amount": "0x3972c0b5127f554c01dd76",
"list": [
"hxf680ae11372c48afebbce77c9d8de455e1acc18a",
...
]
}
}
},
"id": 365
}

Voting on Network Proposals

To cast a vote for a network proposal as a validator we need to sign a transaction using the validator wallet calling the voteProposal method of the governance contract using the id of the proposal as a value in the id input and either 0x1 or 0x0 (to approve or reject) as the values for the vote input.
The following is the RPC call signing to approve a Network Proposal:
{
to: 'cx0000000000000000000000000000000000000001', // governance contract
from: 'hxe9d...', // validator wallet voting on the proposal
nid: '0x2',
version: '0x3',
timestamp: '0x5f9b6631c9940',
stepLimit: '0x7a1200',
nonce: '0x1',
dataType: 'call',
data: {
method: 'voteProposal',
params: {
id: '0xa46f6bb8...', // proposal id
vote: '0x1' // vote to approve
}
},
signature: 'NYey6haxr/KM9RLvfz3g6UC/kawjTz0kc2DwG0n5mQIK18usz7xaR55LcGmfirmPZgPkY+ZbkACbjE3m13eqTwE='
}

Apply Network Proposal

Once two thirds (2/3) of the votes have been cast to approve a network proposal, a transaction calling the applyProposal method can be executed, this method must be called before the voting period ends or the network proposal will expire. The following list describes the policy if this functionality:
  • Only the proposer can cancel its proposal during the voting period, regardless of its state including “Approved”.
  • Only those who voted for the proposal can apply it to the ICON network.
  • Even though the proposal has been applied, if the voting period is not over, main preps can still vote for it (to avoid non-vote slashing).
  • When an unauthorized user executes the applyProposal call, the transaction will be reverted.
The following RPC call showcase an example of an applyProposal call.
{
"jsonrpc": "2.0",
"id": 100,
"method": "icx_sendTransaction",
"params": {
"version": "0x3",
"from": "hxbe258ceb872e08851f1f59694dac2558708ece11",
"to": "cx0000000000000000000000000000000000000001",
"stepLimit": "0x30000",
"timestamp": "0x563a6cf330136",
"nonce": "0x1",
"signature": "VAia7YZ2Ji6igKWzjR2YsGa2m53nKPrfK7uXYW78QLE+ATehAVZPC40szvAiA6NEU5gCYB4c4qaQzqDh2ugcHgA=",
"dataType": "call",
"data": {
"method": "applyProposal",
"parmas": {
"id" : "0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238",
}
}
}
}

Resources: