DApp Metrics Website Info

Purpose

This guide shows how to get useful information on the DApps running on Basechain. Thus, if you are running a DApp metrics website or just want to get more insight on the DApps running on Basechain, then carry on with this guide.

Block Explorers

Web3 Endpoints

You can use the following endpoints to interact with Loom:

  • Basechain: http://basechain.dappchains.com/eth
  • Loom GameChain: http://gamechain.dappchains.com/eth

JSON RPC Interface

Loom is EVM compatible and provides support for several important JSON RPC calls. This section will give you a brief overview of some JSON RPC calls you can use.

eth_getTransactionReceipt

Returns the receipt of a transaction by transaction hash.

Parameters

  1. DATA, 32 Bytes - hash of the transaction

Headers

Content-Type: application/json

Returns

  • Object - A transaction receipt object, or null when no receipt was found:

    • transactionHash : DATA, 32 Bytes - hash of the transaction.
    • transactionIndex: QUANTITY - integer of the transaction's index position in the block.
    • blockHash: DATA, 32 Bytes - hash of the block where this transaction was in.
    • blockNumber: QUANTITY - block number where this transaction was in.
    • from: DATA, 20 Bytes - address of the sender.
    • to: DATA, 20 Bytes - address of the receiver. null when it's a contract creation transaction.
    • cumulativeGasUsed : QUANTITY - The total amount of gas used when this transaction was executed in the block.
    • gasUsed : QUANTITY - The amount of gas used by this specific transaction alone.
    • contractAddress : DATA, 20 Bytes - The contract address created, if the transaction was a contract creation, otherwise null.
    • logs: Array - Array of log objects, which this transaction generated.
    • logsBloom: DATA, 256 Bytes - Bloom filter for light clients to quickly retrieve related logs.

Example

Request

curl --location --request POST "https://plasma-alpha.dappchains.com/eth" \
  --header "Content-Type: application/json" \
  --data "{
	\"jsonrpc\":\"2.0\",
	\"method\":\"eth_getTransactionReceipt\",
	\"params\":[
		\"0x34a641c643aab0028a94c4a3d4a4e057c08f742ef86b262d93ca7ab55c8b2d7f\"
	],
	\"id\":1
}"

Result

{
  "result": {
    "transactionHash": "0x34a641c643aab0028a94c4a3d4a4e057c08f742ef86b262d93ca7ab55c8b2d7f",
    "transactionIndex": "0x0",
    "blockHash": "0xfbb4018172ebeb0d0163103072ed8dfbd439ffa65730e861af4602d82af40d73",
    "blockNumber": "0x912015",
    "from": "0xd21bad2b76e1f45c996ed53855f196728b102b5c",
    "cumulativeGasUsed": "0x0",
    "gasUsed": "0x0",
    "contractAddress": null,
    "to": "0xe9837e455f09300e98f5ac59d862da781da594e7",
    "logs": [
      {
        "logIndex": "0x0",
        "transactionIndex": "0x0",
        "transactionHash": "0x34a641c643aab0028a94c4a3d4a4e057c08f742ef86b262d93ca7ab55c8b2d7f",
        "blockHash": "0xfbb4018172ebeb0d0163103072ed8dfbd439ffa65730e861af4602d82af40d73",
        "blockNumber": "0x912015",
        "address": "0xe9837e455f09300e98f5ac59d862da781da594e7",
        "data": "0x000000000000000000000000000000000000000000000000000000005d491b84",
        "topics": [
          "0x3fe7bd72b9631bc1de227207f7f09fbe45c1aa501170bad6c74a4e7de67cca2c",
          "0x000000000000000000000000000000000000000000000000000000000000b8a0"
        ]
      }
    ],
    "logsBloom": "0x409400890050102205",
    "status": "0x1"
  },
  "jsonrpc": "2.0",
  "id": 1
}

eth_blockNumber

Returns the number of most recent block.

Parameters

none

Headers

Content-Type: application/json

Returns

QUANTITY - integer of the current block number the client is on.

Example

Request

curl --location --request POST "https://plasma-alpha.dappchains.com/eth" \
  --header "Content-Type: application/json" \
  --data "{
	\"jsonrpc\":\"2.0\",
	\"method\":\"eth_blockNumber\",
	\"params\":[],
	\"id\":83
}"

Result

{
  "result": "0x911e01",
  "jsonrpc": "2.0",
  "id": 83
}

eth_getBlockByNumber

Returns information about a block by block number.

Parameters

  1. QUANTITY|TAG - integer of a block number, or the string "earliest", "latest" or "pending".

  2. Boolean - If true it returns the full transaction objects, if false only the hashes of the transactions.

Headers

Content-Type: application/json

Returns

  • Object - A block object, or null when no block was found:

    • number: QUANTITY - the block number. null when its pending block.
    • hash: DATA, 32 Bytes - hash of the block. null when its pending block.
    • parentHash: DATA, 32 Bytes - hash of the parent block.
    • nonce: DATA, 8 Bytes - hash of the generated proof-of-work. null when its pending block.
    • sha3Uncles: DATA, 32 Bytes - SHA3 of the uncles data in the block.
    • logsBloom: DATA, 256 Bytes - the bloom filter for the logs of the block. null when its pending block.
    • transactionsRoot: DATA, 32 Bytes - the root of the transaction trie of the block.
    • stateRoot: DATA, 32 Bytes - the root of the final state trie of the block.
    • receiptsRoot: DATA, 32 Bytes - the root of the receipts trie of the block.
    • miner: DATA, 20 Bytes - the address of the beneficiary to whom the mining rewards were given.
    • difficulty: QUANTITY - integer of the difficulty for this block.
    • totalDifficulty: QUANTITY - integer of the total difficulty of the chain until this block.
    • extraData: DATA - the "extra data" field of this block.
    • size: QUANTITY - integer the size of this block in bytes.
    • gasLimit: QUANTITY - the maximum gas allowed in this block.
    • gasUsed: QUANTITY - the total used gas by all transactions in this block.
    • timestamp: QUANTITY - the unix timestamp for when the block was collated.
    • transactions: Array - Array of transaction objects, or 32 Bytes transaction hashes depending on the last given parameter.
    • uncles: Array - Array of uncle hashes.

Example

Request

curl --location --request POST "https://plasma-alpha.dappchains.com/eth" \
  --header "Content-Type: application/json" \
  --data "{
	\"jsonrpc\":\"2.0\",
	\"method\":\"eth_getBlockByNumber\",
	\"params\":[
		\"latest\",
		true
	],
	\"id\":1
}"

Result

{
  "result": {
    "number": "0x9121d9",
    "hash": "0xb54064a4da2c853122b3c492d67015a535a050a9bb54d59c0ac239a6aa8e7e99",
    "parentHash": "0x63b0e520044f6c3851ea2f80767eb92e4ec905646aea107b071486f470bcae89",
    "nonce": "0x0000000000000000",
    "sha3Uncles": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "logsBloom": "0x0",
    "transactionsRoot": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "stateRoot": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "receiptsRoot": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "miner": "0x1927e984661b0a2cd7cc28cd417ea61eafc6cac8",
    "difficulty": "0x0",
    "totalDifficulty": "0x0",
    "extraData": "0x0",
    "size": "0x0",
    "gasLimit": "0x0",
    "gasUsed": "0x0",
    "timestamp": "0x5d491e38",
    "transactions": [],
    "uncles": []
  },
  "jsonrpc": "2.0",
  "id": 1
}

eth_getBlockByHash

Returns information about a block by hash.

Parameters

  1. DATA, 32 Bytes - Hash of a block.

  2. Boolean - If true it returns the full transaction objects, if false only the hashes of the transactions.

Headers

Content-Type: application/json

Returns

  • Object - A block object, or null when no block was found:

    • number: QUANTITY - the block number. null when its pending block.
    • hash: DATA, 32 Bytes - hash of the block. null when its pending block.
    • parentHash: DATA, 32 Bytes - hash of the parent block.
    • nonce: DATA, 8 Bytes - hash of the generated proof-of-work. null when its pending block.
    • sha3Uncles: DATA, 32 Bytes - SHA3 of the uncles data in the block.
    • logsBloom: DATA, 256 Bytes - the bloom filter for the logs of the block. null when its pending block.
    • transactionsRoot: DATA, 32 Bytes - the root of the transaction trie of the block.
    • stateRoot: DATA, 32 Bytes - the root of the final state trie of the block.
    • receiptsRoot: DATA, 32 Bytes - the root of the receipts trie of the block.
    • miner: DATA, 20 Bytes - the address of the beneficiary to whom the mining rewards were given.
    • difficulty: QUANTITY - integer of the difficulty for this block.
    • totalDifficulty: QUANTITY - integer of the total difficulty of the chain until this block.
    • extraData: DATA - the "extra data" field of this block.
    • size: QUANTITY - integer the size of this block in bytes.
    • gasLimit: QUANTITY - the maximum gas allowed in this block.
    • gasUsed: QUANTITY - the total used gas by all transactions in this block.
    • timestamp: QUANTITY - the unix timestamp for when the block was collated.
    • transactions: Array - Array of transaction objects, or 32 Bytes transaction hashes depending on the last given parameter.
    • uncles: Array - Array of uncle hashes.

Example

Request

curl --location --request POST "https://plasma-alpha.dappchains.com/eth" \
  --header "Content-Type: application/json" \
  --data "{
        \"jsonrpc\":\"2.0\",
        \"method\":\"eth_getBlockByHash\",
        \"params\":[
                \"0xfbb4018172ebeb0d0163103072ed8dfbd439ffa65730e861af4602d82af40d73\",
                true
        ],
        \"id\":1
}

Result

{
  "result": {
    "number": "0x912015",
    "hash": "0xfbb4018172ebeb0d0163103072ed8dfbd439ffa65730e861af4602d82af40d73",
    "parentHash": "0x55e68e8c7ba6d797cc212ab518d12a102ce6424ac09d94beade7b56f003ea9a3",
    "nonce": "0x0000000000000000",
    "sha3Uncles": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "logsBloom": "0x409400890050102205",
    "transactionsRoot": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "stateRoot": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "receiptsRoot": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "miner": "0xc81ab0af2886532cb868e5b0f4f196360663a5e4",
    "difficulty": "0x0",
    "totalDifficulty": "0x0",
    "extraData": "0x0",
    "size": "0x0",
    "gasLimit": "0x0",
    "gasUsed": "0x0",
    "timestamp": "0x5d491b84",
    "transactions": [
      {
        "hash": "0x34a641c643aab0028a94c4a3d4a4e057c08f742ef86b262d93ca7ab55c8b2d7f",
        "nonce": "0x22204",
        "blockHash": "0xfbb4018172ebeb0d0163103072ed8dfbd439ffa65730e861af4602d82af40d73",
        "blockNumber": "0x912015",
        "transactionIndex": "0x0",
        "from": "0xd21bad2b76e1f45c996ed53855f196728b102b5c",
        "to": "0xe9837e455f09300e98f5ac59d862da781da594e7",
        "value": "0x0",
        "gasPrice": "0x0",
        "gas": "0x0",
        "input": "0xdee11cb0"
      }
    ],
    "uncles": []
  },
  "jsonrpc": "2.0",
  "id": 1
}

eth_getCode

Returns code at a given address.

Parameters

  1. DATA, 20 Bytes - address.
  2. QUANTITY|TAG - integer block number, or the string "latest", "earliest" or "pending".

Headers

Content-Type: application/json

Returns

DATA - the code from the given address.

Example

Request

curl --location --request POST "https://plasma-alpha.dappchains.com/eth" \
  --header "Content-Type: application/json" \
  --data "{
        \"jsonrpc\":\"2.0\",
        \"method\":\"eth_getCode\",
        \"params\":[
                \"0xc72783049049c3d887a85df8061f3141e2c931cc\",
                \"0x2\"
        ],
        \"id\":1
}

Result

{
  "result": "0x608060405260043610603f576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff168063f6b4dfb4146044575b600080fd5b348015604f57600080fd5b5060566098565b604051808273ffffffffffffffffffffffffffffffffffffffff1673ffffffffffffffffffffffffffffffffffffffff16815260200191505060405180910390f35b73e288d6eec7150d6a22fde33f0aa2d81e06591c4d815600a165627a7a72305820b8b6992011e1a3286b9546ca427bf9cb05db8bd25addbee7a9894131d9db12500029",
  "jsonrpc": "2.0",
  "id": 1
}

Busy Contracts

Basechain DPoS Staking

  • Smart Contract #1: 0xc72783049049c3d887a85df8061f3141e2c931cc

Relentless

  • Smart Contract #1: 0xE288D6EeC7150d6A22fDe33f0Aa2D81E06591c4d

Loom Marketplace

  • Smart Contract #1: 0xbd54b4b26ac8e4bd202b70f3fbad6b3d5a885eec
  • Smart Contract #2: 0x95273cded5f217e391cbf48d2528d171cb1b92b0
  • Smart Contract #3: 0xcf2851b1ad63d093238ea296524be8d7cd920e0b

Axie Infinity

  • Smart Contract #1: 0xd839bdf39fb13adc57f4a3cbacba1d8b15429b46
  • Land: 0xe228f42ccabe5f38c492b50906ae03d950546a3f
  • ItemCollection: 0x485c9f05ac8c3c957ca43518ec346ebff6d47b84
  • ChestUnboxer: 0x6491fefedb00c59d36c2f30a65325bbd1046cece

CryptoRaves

  • Smart Contract #1: 0x28694c32059a9538680A622A2764D7cbb0E01F93

CryptoWars

  • Smart Contract #1: 0xa85a641B4ef793d0A3650bf6997b2571aDB2840e
  • Smart Contract #2: 0x9160f5cc9B5fDd7798152078259aaFB536957508
  • Smart Contract #3: 0xB22Da027c475c9493b931115204fC8C71B82F11d

Sorare

  • Smart Contract #1: 0xb3BEE074E86982dB1F1186FC010B61608fC8c0Dc
  • Smart Contract #2: 0xa378EF33461CB8D33C921DF59655355dC7eD0cd9

Alice Finance

  • Smart Contract #1: 0x1Fe7A4F1F8b8528c4cf55990f78cB38d203ADE73
  • AliceIFO - Initial Free Offering: 0xc7bb19a92c1a050087b0633c6e4cb4bf363053d9

Other Wallets