@zilliqa-js/viewblock
Advanced tools
> A library interfacing with the Zilliqa blockchain and ViewBlock's APIs
A library interfacing with the Zilliqa blockchain and ViewBlock's APIs
Install using your favorite package manager.
yarn add @zilliqa-js/viewblock
The library client is exposed as the default export in the form of a factory function.
:warning: Although not enforced, not providing an
apiKeywill disable most of the methods of the library. Get one on ViewBlock by creating an account and a key in your settings.
| Param | Type | Required | Default | Values |
|---|---|---|---|---|
| apiKey | String | false | ||
| agent | Agent | false | null | http.Agent |
| network | String | false | mainnet | mainnet, testnet |
import Zilliqa from '@zilliqa-js/viewblock'
const client = Zilliqa({
apiKey: 'xxx',
})
You can obviously use basic commonjs requires too:
const Zilliqa = require('@zilliqa-js/viewblock')
The agent parameter allows to use any http.Agent implementation of your choice.
As an example, https-proxy-agent could be
provided to proxy the requests.
These 3 parameters passed when creating the client act as a global default configuration, but can be overriden on each individual call for convenience purposes. As an example:
const client = Zilliqa({ apiKey: 'xxx' })
client.getBlock(42, { network: 'testnet' })
client.getGasPrice({ network: 'testnet' })
Here, although the client defaults to mainnet, we override it specifically for these two calls.
It won't affect subsequent methods, as they will use the default network.
All the methods return a Promise, making it await compatible.
Get one transaction by hash.
await client.getTx('0x65fd90f1fc2d3b631a0cf6a77be9947e9f4559d9ece9b9a1eef170d593bd9213')
{
hash: '0x65fd90f1fc2d3b631a0cf6a77be9947e9f4559d9ece9b9a1eef170d593bd9213',
blockHeight: 577008,
from: 'zil1kshhphza3vlyfamjchamk2d3j022a55kn6es38',
to: 'zil1z3zky3kv20f37z3wkq86qfy00t4a875fxxw7sw',
value: '29000000000000',
fee: '1000000000',
timestamp: 1590005268574,
signature:
'0xEA74CF5062954368ECBEB9EA00014C9F78590391703E0DCEF002FAB50D30C1147D84BDC8A1703A33181CD3BDE315E6B28627EB0266DCD0D3CB886130B06312D1',
nonce: 1,
receiptSuccess: true,
data: null,
internalTransfers: [],
events: [],
transitions: []
}
:warning: Pending implementation.
Create a transaction using the JSON RPC. Follow the create transaction transaction parameters documentation to get a better idea on how to construct it.
await client.createTx({
version: 65537,
nonce: 1,
toAddr: '0x4BAF5faDA8e5Db92C3d3242618c5B47133AE003C',
amount: '1000000000000',
pubKey: '0205273e54f262f8717a687250591dcfb5755b8ce4e3bd340c7abefd0de1276574',
gasPrice: '1000000000',
gasLimit: '1',
code: '',
data: '',
signature: '29ad673848dcd7f5168f205f7a9fcd1e8109408e6c4d7d03e4e869317b9067e636b216a32314dd37176c35d51f9d4c24e0e519ba80e66206457c83c9029a490d',
priority: false
})
{
msg: 'Non-contract txn, sent to shard',
hash: '2d1eea871d8845472e98dbe9b7a7d788fbcce226f52e4216612592167b89042c'
}
Retrieve one address by hash.
await client.getAddress('zil1hqn9w4tf23x8lxh6vk5jv9hupt0s85gemyetmu', { network: 'testnet' })
{
hash: 'zil1hqn9w4tf23x8lxh6vk5jv9hupt0s85gemyetmu',
balance: '999962495000000000',
nonce: 4,
type: 'normal'
}
Get the transactions made by an address.
| Param | Type | Required | Default |
|---|---|---|---|
| page | Number | false | 1 |
await client.getAddressTxs('zil16awfafxs789g8nthnm5s9p4l8vnxs5zpfr3upr', { page: 1 })
{
docs: [
{
hash: '0xced4731d535e1b0ba72d562d6c1dfd0ef71d1189abfa1ead8341667ca22aa01b',
blockHeight: 1128974,
from: 'zil15wglkgh0vht9zeaqe9x4axmw4nkw2mr79z6g3x',
to: 'zil16awfafxs789g8nthnm5s9p4l8vnxs5zpfr3upr',
value: '25000000000000',
fee: '3026000000000',
timestamp: 1581304554974,
signature:
'0x2E293AB15F747F90292D1262731DCD597008C456266E654466823728F92BDC6F6FB7E819C9A1518DA827C0031E1A7DD349FA920B04C420359053808E3E177648',
direction: 'in',
nonce: 312,
receiptSuccess: true,
data: '{"_tag": "request", "params": []}',
internalTransfers: [
{
from: 'zil16awfafxs789g8nthnm5s9p4l8vnxs5zpfr3upr',
to: 'zil1mejpsqd5cw589xyq3llzvrk0nvetm9v0l5kcn7',
value: '25000000000000',
direction: 'in',
depth: '0,0',
},
],
events: [
{
address: 'zil1mejpsqd5cw589xyq3llzvrk0nvetm9v0l5kcn7',
name: 'request',
details:
'request (String msg, Uint32 id, ByStr20 from, Uint32 reqtype, Uint128 gaslimit, Uint128 gasprice, String paramdata, Uint128 fee)',
params: {
msg: 'send request success',
id: '10',
from: '0xa391fb22ef65d65167a0c94d5e9b6eacece56c7e',
reqtype: '1',
gaslimit: '20000',
gasprice: '1000000000',
paramdata:
"{'url':'https://samples.openweathermap.org/data/2.5/weather',\n 'params':{'q':'London,uk','appid':'b6907d289e10d714a6e88b30761fae22'}}",
fee: '3999000000000',
},
},
],
transitions: [
{
addr: '0xd75c9ea4d0f1ca83cd779ee90286bf3b26685041',
depth: 0,
msg: {
_amount: '25000000000000',
_recipient: '0xde641801b4c3a87298808ffe260ecf9b32bd958f',
_tag: 'request',
params: [
{
type: 'ByStr20',
value: '0xa391fb22ef65d65167a0c94d5e9b6eacece56c7e',
vname: 'user_addr',
},
{
type: 'Uint32',
value: '1',
vname: 'request_type',
},
{
type: 'String',
value:
"{'url':'https://samples.openweathermap.org/data/2.5/weather',\n 'params':{'q':'London,uk','appid':'b6907d289e10d714a6e88b30761fae22'}}",
vname: 'param_data',
},
{
type: 'Uint128',
value: '1000000000',
vname: 'gas_price',
},
{
type: 'Uint128',
value: '20000',
vname: 'gas_limit',
},
{
type: 'String',
value: 'callback',
vname: 'callback_func',
},
],
},
},
{
addr: '0xde641801b4c3a87298808ffe260ecf9b32bd958f',
depth: 1,
msg: {
_amount: '25000000000000',
_recipient: '0xc4818b8c0d0c2ae775e8ed1998d72c7aa0743063',
_tag: '',
params: [],
},
},
],
},
{
hash: '0x6bc8fcd7a14bef419eae03d8d9ac68de0bcc279a50a86fe3a00c24d99833c5e3',
blockHeight: 1064704,
from: 'zil10h9339zp277h8gmdhds6zuq0elgpsf5qga4qvh',
to: 'zil16awfafxs789g8nthnm5s9p4l8vnxs5zpfr3upr',
value: '0',
fee: '2590000000000',
timestamp: 1579266403473,
signature:
'0x5A72F6B4826EBCE69F62DB2D85991D780A54ED4C459BB0732EB1F8B2C77DDE8F2B3DB6F022797561809E30310E830E755A98EDAE526F96675A76137815BBF81C',
direction: 'in',
nonce: 208,
receiptSuccess: true,
data:
'[{"vname": "_scilla_version", "type": "Uint32", "value": "0"}, {"vname": "owner", "type": "ByStr20", "value": "0x7dcb18944157bd73a36dbb61a1700fcfd0182680"}]',
internalTransfers: [],
events: [],
transitions: [],
},
],
page: 1,
totalPages: 1,
total: 2,
limit: 25,
nextPage: null,
prevPage: null
}
Get the token transactions associated with an address. Note token can be specified
to filter for specific token transactions.
| Param | Type | Required | Default |
|---|---|---|---|
| page | Number | false | 1 |
| token | String | false |
await client.getAddressTokenTxs('zil1my8ju5uvur0cnjp88jknkclvgj3ufmvz5pxyml', {
page: 1,
token: 'zil1l8mn5r5urrlxzf6q9z790zz2c5a9ya8366hzre',
})
{
docs: [
{
hash: '0x3c60b3194a175fa4d484fb3074f3bd7ba9bfd62c7d6dc1da6f86a4c948bb7f92',
from: 'zil1qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq9yf6pz',
to: 'zil1my8ju5uvur0cnjp88jknkclvgj3ufmvz5pxyml',
value: '0.02',
tokenAddress: 'zil1l8mn5r5urrlxzf6q9z790zz2c5a9ya8366hzre',
blockHeight: 1776290,
timestamp: 1599139330519,
direction: 'in',
},
{
hash: '0x7b7555d456cf4415c1f58af26a8b8788ebb3431c41ccb893d0c3a06c2157c064',
from: 'zil1qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq9yf6pz',
to: 'zil1my8ju5uvur0cnjp88jknkclvgj3ufmvz5pxyml',
value: '0',
tokenAddress: 'zil1l8mn5r5urrlxzf6q9z790zz2c5a9ya8366hzre',
blockHeight: 1776298,
timestamp: 1599139497307,
direction: 'in',
},
{
hash: '0xc5f582866251b022ac32e98a6e4598319288234ef8722b04bf5c285122094af1',
from: 'zil1qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq9yf6pz',
to: 'zil1my8ju5uvur0cnjp88jknkclvgj3ufmvz5pxyml',
value: '0.01',
tokenAddress: 'zil1l8mn5r5urrlxzf6q9z790zz2c5a9ya8366hzre',
blockHeight: 1776348,
timestamp: 1599140579375,
direction: 'in',
},
{
hash: '0x7b1356842d1e595384ee2de38df7fc24ed1a57f5df65c3cc23c7b4f02415cdeb',
from: 'zil1qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq9yf6pz',
to: 'zil1my8ju5uvur0cnjp88jknkclvgj3ufmvz5pxyml',
value: '0.04',
tokenAddress: 'zil1l8mn5r5urrlxzf6q9z790zz2c5a9ya8366hzre',
blockHeight: 1776384,
timestamp: 1599141333323,
direction: 'in',
},
{
hash: '0x7e1da8fb622bfb6203d65573cb4367077f85fd65b90697fd82ca3e8e145b0841',
from: 'zil1qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq9yf6pz',
to: 'zil1my8ju5uvur0cnjp88jknkclvgj3ufmvz5pxyml',
value: '0',
tokenAddress: 'zil1l8mn5r5urrlxzf6q9z790zz2c5a9ya8366hzre',
blockHeight: 1776390,
timestamp: 1599141458698,
direction: 'in',
},
{
hash: '0xe0094c46b4bd1fb0ef0fbb623c9d0431f835d850a28e8a5b81886ca7e91061b2',
from: 'zil1qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq9yf6pz',
to: 'zil1my8ju5uvur0cnjp88jknkclvgj3ufmvz5pxyml',
value: '0',
tokenAddress: 'zil1l8mn5r5urrlxzf6q9z790zz2c5a9ya8366hzre',
blockHeight: 1776704,
timestamp: 1599148162726,
direction: 'in',
},
{
hash: '0x785f21e312a10307907ac3f06da0d6056056082fa0265ef64fa8b402676425ab',
from: 'zil1qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq9yf6pz',
to: 'zil1my8ju5uvur0cnjp88jknkclvgj3ufmvz5pxyml',
value: '0.0196969696',
tokenAddress: 'zil1l8mn5r5urrlxzf6q9z790zz2c5a9ya8366hzre',
blockHeight: 1776986,
timestamp: 1599154120380,
direction: 'in',
},
],
page: 1,
totalPages: 1,
total: 7,
limit: 25,
nextPage: null,
prevPage: null
}
Get the init parameters of a given smart contract.
await client.getSCInit('zil1cm2x24v7807w7yjvmkz0am0y37vkys8lwtxsth')
[
{
"type": "Uint32",
"value": "0",
"vname": "_scilla_version"
},
{
"type": "List ByStr20",
"value": {
"argtypes": [
"ByStr20"
],
"arguments": [
"0x5B42879E9c497EdAE5b3A7B3DCfD40920feC0599",
{
"argtypes": [
"ByStr20"
],
"arguments": [
"0x98c656454b4E27762ab62D176246f31def011875",
{
"argtypes": [
"ByStr20"
],
"arguments": [
"0x09EE3238528247354862700f5C00A349a499badB",
{
"argtypes": [
"ByStr20"
],
"arguments": [
"0x705856236100A28106BD3b760ADaFDea7F990dFB",
{
"argtypes": [
"ByStr20"
],
"arguments": [],
"constructor": "Nil"
}
],
"constructor": "Cons"
}
],
"constructor": "Cons"
}
],
"constructor": "Cons"
}
],
"constructor": "Cons"
},
"vname": "owners_list"
},
{
"type": "Uint32",
"value": "2",
"vname": "required_signatures"
},
{
"type": "BNum",
"value": "300675",
"vname": "_creation_block"
},
{
"type": "ByStr20",
"value": "0xc6d465559e3bfcef124cdd84feede48f996240ff",
"vname": "_this_address"
}
]
Get the state or sub-state of a smart contract.
| Param | Type | Required |
|---|---|---|
| payload | String/Object | true |
| payload.address | String | false |
| payload.name | String | false |
| payload.indices | Array | false |
await client.getSCState('zil1cm2x24v7807w7yjvmkz0am0y37vkys8lwtxsth')
{
_balance: "762000001000000000000",
contract_valid: {
argtypes: [],
arguments: [],
constructor: 'Valid'
},
owners: {
'0x09ee3238528247354862700f5c00a349a499badb': {
argtypes: [],
arguments: [],
constructor: 'True'
},
'0x5b42879e9c497edae5b3a7b3dcfd40920fec0599': {
argtypes: [],
arguments: [],
constructor: 'True'
},
'0x705856236100a28106bd3b760adafdea7f990dfb': {
"argtypes": [],
"arguments": [],
"constructor": 'True'
},
'0x98c656454b4e27762ab62d176246f31def011875': {
argtypes: [],
arguments: [],
constructor: 'True'
}
},
signature_counts: {},
signatures: {},
transactionCount: '0',
transactions: {}
}
If you want to retrieve only part of the contract state, send an object payload and provide the optional name or indices parameters:
await client.getSCState({
address: 'zil1cm2x24v7807w7yjvmkz0am0y37vkys8lwtxsth',
name: 'owners',
indices: ['0x09ee3238528247354862700f5c00a349a499badb'],
})
{
owners: {
'0x09ee3238528247354862700f5c00a349a499badb': {
argtypes: [],
arguments: [],
constructor: 'True'
}
}
}
Retrieve one block information by its height.
await client.getBlock(59903)
{
height: 59903,
timestamp: 1554172478877,
txCount: 890,
dsHeight: 600,
gasLimit: '1500000',
gasUsed: '890',
minerPubKey: '0x0227939F72067FE1AC79276CE779A27C560391A660D42FDE0102229964F1C2C511',
microBlocks: [
{
hash: '3b7041c131b80fc8ab6aa65fc1590272f08ce13c0919a621563e90ab544f948c',
shardId: 0,
txRootHash: 'ed461421c0a698ed009aeefddc5a4d1c0a03570081931efdc75d5e5d54e4e017'
},
{
hash: 'ed64ecba273c3366e4fc558c218f8d67d7c1e2ccf77dc10379f41fb279af70ee',
shardId: 1,
txRootHash: '692374ea2ad4ac5240ec8ee89d9d3a5899a6ed8c1c25d96ed9ad2066ce0539c5'
},
{
hash: '4f3dcf4078ecc0e4cae69068565b72fbd47012daa0f858bafb028edf1536a3ff',
shardId: 2,
txRootHash: '0000000000000000000000000000000000000000000000000000000000000000'
}
],
stateDeltaHash: '6e62ee3e1af7927a1c9ee8ec375951770b38a34305f3eae772f673942dfb5923',
stateRootHash: '6dde256dd2be07ef69906a31790c539266b410ffdfba64198e6f16ed7b62d888'
}
Retrieve the transactions confirmed in a block.
| Param | Type | Required | Default |
|---|---|---|---|
| page | Number | false | 1 |
await client.getBlockTxs(59903, { page: 1 })
{
docs: [
{
hash: '0xfe55cf4954507a5b809cdfa8725a499d0656e3644838c2cd826eaa57a8e48f62',
from: 'zil16ttxueshqnnun5hlen8ql8q5rvx7vvtm63ccna',
to: 'zil1m9pv2cr087ewxncupyeujsr0q3fmulu6ep5elv',
value: '703140978601111',
fee: '1000000000',
timestamp: 1554172478877,
nonce: 1,
receiptSuccess: true,
events: [],
data: null,
internalTransfers: [],
transitions: []
},
{
hash: '0xfd816a3d5118d7a21e4a56d2c91f06a30315e0ba8851cfdaf6b9a6c61fc524fd',
from: 'zil1mtzdp32j5jm7hfj4n3mxzf24lt779mf93pw0dy',
to: 'zil1ggkgt2mcl92hw6yccer0f2q694xqkr6dk25cag',
value: '1887350370678611',
fee: '1000000000',
timestamp: 1554172478877,
nonce: 1,
receiptSuccess: true,
events: [],
data: null,
internalTransfers: [],
transitions: []
},
{
hash: '0xfd0448f629b93038b5e4cddd51d2b90f9682882cd40ef3ee465bc4f0e55e357b',
from: 'zil19n6d3h6a3jalkucg9aue8m3gaqdjt3ltayktml',
to: 'zil1m9pv2cr087ewxncupyeujsr0q3fmulu6ep5elv',
value: '749245402553526',
fee: '1000000000',
timestamp: 1554172478877,
nonce: 1,
receiptSuccess: true,
events: [],
data: null,
internalTransfers: [],
transitions: []
},
{
hash: '0xfbc097da285c436171d4724c3a4fbf6aa6c309868bf717aa6bebf6bab09cdc10',
from: 'zil1ph8pkmdgche9y9n529qdu9z4q772440eaae5pe',
to: 'zil1m9pv2cr087ewxncupyeujsr0q3fmulu6ep5elv',
value: '569420970197693',
fee: '1000000000',
timestamp: 1554172478877,
nonce: 1,
receiptSuccess: true,
events: [],
data: null,
internalTransfers: [],
transitions: []
},
{
hash: '0xfa8bf7715d4cbe23524e72ab7920efac722be6284445dccdade4b0b6f6a4caac',
from: 'zil1ujn9s37yc7hs0eklnwfnhrkgvtqljdwafgxjm2',
to: 'zil1ggkgt2mcl92hw6yccer0f2q694xqkr6dk25cag',
value: '426896695040558',
fee: '1000000000',
timestamp: 1554172478877,
nonce: 1,
receiptSuccess: true,
events: [],
data: null,
internalTransfers: [],
transitions: []
},
{
hash: '0xf9072f1aafad82a8f144b32b4404f685649fbcc82518d3c731835ec745211179',
from: 'zil18ejxkf2u3cfknr6kulp36g6drsvylf6t3w0cpe',
to: 'zil1m9pv2cr087ewxncupyeujsr0q3fmulu6ep5elv',
value: '1193069646888861',
fee: '1000000000',
timestamp: 1554172478877,
nonce: 1,
receiptSuccess: true,
events: [],
data: null,
internalTransfers: [],
transitions: []
},
{
hash: '0xf8fc4928dfd539f9bf84a52531c8b06d59a95615c7845e4cb37b5f92aae775cd',
from: 'zil1thtkpmzjpx26jhyvau2xdy5s7e66rvu9xcu2gh',
to: 'zil1ggkgt2mcl92hw6yccer0f2q694xqkr6dk25cag',
value: '996044741466089',
fee: '1000000000',
timestamp: 1554172478877,
nonce: 1,
receiptSuccess: true,
events: [],
data: null,
internalTransfers: [],
transitions: []
},
{
hash: '0xf8b489747fa37488634eb2c14d38784729157ee9c46be59744a70dbd133cf587',
from: 'zil10pfk76qdxmykvxqfu7ffajkgshe240v3x26w65',
to: 'zil1m9pv2cr087ewxncupyeujsr0q3fmulu6ep5elv',
value: '270809781797106',
fee: '1000000000',
timestamp: 1554172478877,
nonce: 1,
receiptSuccess: true,
events: [],
data: null,
internalTransfers: [],
transitions: []
},
{
hash: '0xf895b7f488bbecc8c91e8101163c1a2fa2731e6af1ca70dd49f45a18ecb4ca81',
from: 'zil1mwz4xelqdkddqdnvdptagx57mmzktjfaz2mjpz',
to: 'zil1ggkgt2mcl92hw6yccer0f2q694xqkr6dk25cag',
value: '1504033644577742',
fee: '1000000000',
timestamp: 1554172478877,
nonce: 1,
receiptSuccess: true,
events: [],
data: null,
internalTransfers: [],
transitions: []
},
{
hash: '0xf8339e2ae31695d1ca04a9fd238029f9c75de36665f06726fe0d5096aad85b8b',
from: 'zil1phfhqqh5axt7ehmlj3vul3syc48xhyp47h65gr',
to: 'zil1ggkgt2mcl92hw6yccer0f2q694xqkr6dk25cag',
value: '1477095734460620',
fee: '1000000000',
timestamp: 1554172478877,
nonce: 1,
receiptSuccess: true,
events: [],
data: null,
internalTransfers: [],
transitions: [] },
{
hash: '0xf81b71e96f13760d405f88b7f97ee7a4ef71174e7018d041b03c0f27a3760b4b',
from: 'zil1xrr4s95lsgxur9seqp34ck5g7ml7relmp7v5rz',
to: 'zil1m9pv2cr087ewxncupyeujsr0q3fmulu6ep5elv',
value: '458516000791614',
fee: '1000000000',
timestamp: 1554172478877,
nonce: 1,
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Allows to listen on a variety of events.
:warning: We do not guarantee either the order upon which the messages are sent, nor that all the messages will be delivered successfully (typically in case of an outage or disruption of service).
Subscribe to new blocks.
client.subscribe('block', console.log)
Subscribe to new transactions.
client.subscribe('transaction', console.log)
Subscribe to transactions made to or from a specific address.
client.subscribe({ event: 'addressTx', param: 'zil1gqww6yq9d9nefhg3rec989kxsqs4zm8dzeyr0q' }, console.log)
Subscribe to events emitted by one contract.
client.subscribe({ event: 'contractEvent', param: 'zil1vszj220406ez4gglpf6jvlds5jkszju63kpvax' }, console.log)
Get the current minimum gas price for this DS epoch.
await client.getGasPrice()
'1000000000'
FAQs
> A library interfacing with the Zilliqa blockchain and ViewBlock's APIs
We found that @zilliqa-js/viewblock demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 5 open source maintainers collaborating on the project.
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