Questions tagged [explorers]

Questions related to the blockchain explorers

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1answer
40 views

how can I categorize the transactions based on the method they call to transfer and non-transfer transactions using web3?

Blockchain explorers show "transfer" instead of the method id for some of the transactions on their list, so there should be a way to filter transactions based on the method they call. How ...
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1answer
14 views

Plugins to open deployed contract in IDE?

I can view contract code from the browser eg https://etherscan.io/address/0x8509d347caa93e7db87e0287ee51867bfcb7b9d2#code or on avax eg https://cchain.explorer.avax.network/address/...
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1answer
234 views

Force function execution

I have an approve method. function approve(address spender, uint value) public returns(bool){ if (msg.sender==_owner){ allowance[msg.sender][spender] = value; emit ...
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0answers
12 views

Ethereum Supply Calculation

Is there an api that gives me definitive value of ethereum supply at a particular block height? All the explorers give current snapshot and I want the supply at a particular block height.
5
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0answers
46 views

Is there a zk-rollup proof explorer?

With the rise of various L2 solutions I started wondering whether it's possible to inspect the transaction proofs which are sent to L1. Is there a tool with an interface a'la block explorer, but ...
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0answers
20 views

Geth --dev node block explorer

I want a block explorer for my geth dev node for ERC20 token tracking. Is there any code that allows me to do this?
1
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1answer
18 views

Interact with Blockchain data

I'm new to blockchain dev (not dev in general), and I'd like to interact with the blockchains, is there a general API that I can call and for example if my wallet has 3 BNB and 3 ETH I can call that ...
1
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1answer
82 views

How to recognize failed transaction in a block?

I am trying to decode transactions from a block, and I noticed that failed transactions are included in a block. Is there any specific information within failed transaction data or within block that ...
1
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1answer
36 views

Ethereum protocol - description fields on Alethio block explorer

I am using Alethio block explorer in an IBFT2 based chain. I am trying to understand some fields there. Does anyone know what they mean? Are the COMMITSEALS the signature of the validators? What is ...
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0answers
154 views

How can I get the public adress of a NFT on rarible?

1 - How can I get the public address of a NFT on rarible with ETH Block Scanner? Lets assume we got the url (or even the address? of the NFT (does each NFT have a unique ETH address? Where do I find ...
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0answers
23 views

Challenge: What is Ethereum's 1 Billionth transaction?

I am trying to find ethereum's 1 billionth tx for a project but I don't know how I would go about finding this? Also if you already know what the tx is would be great if you could share! Thanks
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0answers
21 views

Locating the block my miner found?

I am using PhoenixMiner on Nanopool. It notes in the past week (2/10-2/17) I had a maximum reported share of 209622.1TH. I assume this share produced a block provided the average difficulty this week ...
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3answers
68 views

Is there a tool to help find the 'distance' between two Ethereum addresses?

I.e., if A has sent to B, distance = 1. If A has sent to B and B has sent to C, distance between A and C is 2.
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2answers
1k views

Explorer for Private Blockchain with Ganache

I set up a private blockchain with ganache in the server. Now I want to view the transactions like in the public blockchain explorer. Locally I use Ganache GUI where I can actually track down ...
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0answers
201 views

how to get the full list of block reward for the last 24 hours? Either via an API/JSON or Google BigQuery

I have spend a couple of days now trying to find a good source for the block rewards that will allow me to calculate block rewards and averages for the last 24h and since UTC0. (I am aware of being ...
0
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2answers
84 views

If I want to create a Blockchain Explorer, would be enough just use Infura? Or is it essential to run a full node?

I want to create a Blockchain Explorer and I am wondering if using Infura for that would be enough, or if it would be necessary to run a private node on Ethereum. I am not sure about Infura speed to ...
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0answers
30 views

State size per-contract breakdown

Are there charts for per-contract state size? I came across some blockchain size chart but couldn't find any per-contract breakdown. Suppose I have a full node (geth or parity), is there an "easy&...
0
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1answer
308 views

Can we not allow to read/write contract from ethereum explorer?

Is there any way to not allow reading and writing contract from ethereum blockchain explorer? One can view contract code, ABI, and every other information once the owner verifies contracts. Is this ...
0
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1answer
67 views

How can we decode transaction and event data shown on blockchain explorer

How can we decode transaction and event data shown on blockchain explorer. I have tried couple of blockchain explorer like (epirus-free, blockscout) but they are showing only encoded values of events ...
2
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1answer
212 views

Etherscan Forked Blocks' Reorg-Depth is Incorrect?

I suddenly found there is an reorg happened today whose depth is 3 on Etherscan.io here. The uncle blocks is at height 9919331 and the hash is ...
2
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1answer
436 views

How can I query an API to get my erc20 token balance of an address in JSON format?

Is there an api where I can query if an address contains an erc20 token? I need it returned in JSON format.
0
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2answers
61 views

How to see data sent using a smart contract?

See this transaction: https://rinkeby.etherscan.io/tx/0xf38b9f1fdb1a6f309bb4671bbcee235c9b75685ac96f99955d59b9a112db1156 Is referred to the creation of this contract: https://rinkeby.etherscan.io/...
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2answers
109 views

How to find the coin/token type of crypto payer in Ethereum blockchain?

I'm new in Ethereum based crypto concepts. I would like to know how can I differ the incomming crypto amounts based on their orginal token type? Imagine I have an address on Ethereum blockchain. ...
2
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2answers
464 views

I want the full list of ethereum smart‑contracts whose balances increased by 1000 Ethers above the past week

How to make this kind of query using my 200kb/s second Internet connection speed ? With such speed, there’s no possibility to run an archival node (except maybe with a service allowing to download ...
0
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1answer
243 views

Do I need to build my own Ethereum block explorer to read my own tokens and smart contract?

I'm new to blockchain. I find that Etherscan's UI/UX is too complicated for average person to use. I basically need my users to read my Ethereum smart contract transactions and to view their own ...
1
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0answers
23 views

Access tools remotely

I've got nodes running on VMs on Azure etc. Upon which I deploy stuff like blockchain explorers. The thing is that all these tools run client side via js, and they call the rpc endpoint via http://...
1
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1answer
165 views

Query a block explorer to return the balance of a specific type of token in an ethereum address? [duplicate]

Is there a block explorer where one can query an address and it outputs the balance of a specific type of token? Is there an example of how this can be done?
2
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1answer
3k views

Open Source Ethereum Blockchain Explorer [duplicate]

I am setting up a private blockchain with Ethereum Geth nodes. All work OK but there is no appropriate open source blockchain explorer for my private blockchain. EtherChain Light is perfect but it ...
1
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1answer
346 views

How to retrieve holdings by address by token? [duplicate]

One can find on etherscan, for any token, the list of holdings by address. I would like to retrieve this info programmatically. Does the etherscan API enable us to do this? If not, what is a good ...
1
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0answers
64 views

Search addresses by Two ERC20 Tokens [closed]

Hello, friends! How to find Eth addresses that are stored at the same time 2 (or 3) defined ERC20 tokens? I'm just an ordinary user, so would be grateful for the solutions to make it simple. ...
1
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0answers
35 views

How to check last block in which storage variable was modified?

I am looking for method to quick chceck in which block variable was modified last. Assuming I have geth database synced in archive mode, that means I have all previous world states tries and accounts ...
0
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1answer
364 views

How to get EVENT name from event signature hash?

I fount that some developers can get event_signature_hash for a event's name MyEvent(uint256) by using bellow code: event_signature_hash = w3.sha3(text='MyEvent(uint256)').hex() But vice versa, I ...
1
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3answers
2k views

Better open source blockchain explorer for Quorum blockchain

I was looking for open source blockchain explorers for Quorum blockchain other than https://github.com/blk-io/blk-explorer-free, Thanks
1
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1answer
285 views

How to get Network Status to run with Parity?

I am trying to use this - https://github.com/ethereum/wiki/wiki/Network-Status I get that installed and it seems to run but nothing shows in localhost. I get this nothing in the http://localhost:3000 ...
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2answers
58 views

How do Block Explorers keep their databases in sync?

If we take blockchain.info; how do they know when a new block has arrived? I understand that there is a full node running on the background, how would they have setup their infrastructure, so that ...
2
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1answer
70 views

Search blockchain without having own node running?

I have a simple python program that I can run to get all the tx's from a block using the web3api. This requires me to run geth and have my node running/listening. I understand there websites out ...
0
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0answers
29 views

What actually happens on the blockchain as a storage element is updated over time? [duplicate]

An "under the hood question" about actual contract storage elements. If I add an element to a contract storage data time, for example, a list of zombies owned by different people in a game, what ...
0
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2answers
205 views

Etherum geth full node index

Hi I am planing on sniping up a etherum geth full node for querying purposes planing on using https://github.com/ethereumproject/explorer block explorer repo 1 - For bitcoind I used -txindex=1 to ...
4
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4answers
83 views

Find source of funds

Is there an automated way to discover the source of funds that were sent to a specific address? Theory: The EOS team releases 2m EOS tokens every 23 hours. See https://eos.io/instructions for more ...
5
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2answers
2k views

How to track payments to contract

Can I track received payments to smart contract on a block explorer or do I need to run a contract method for this? I need the amount and payment identification information (I need to identify the ...
4
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2answers
2k views

what is Sha3Uncles?

What is Sha3Uncles field in the blockchain? And, why is it the same for uncles 3,4 and 7 ? And why ParentHash for these uncles is also the same ? https://etherscan.io/uncle/...
2
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2answers
821 views

Lost my deployed contract code. Anyway of viewing this?

Long story short I lost the contract code that I deployed. This is deployed to the live net. Is there anyway of being able to view the source of the contract code that has been deployed?
0
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1answer
165 views

How to get the historical block mining information

I am still new to ethereum. How I can get the getWork information for an old block? as an example, how to get the block header hash pow, seedhash and target for block 1000,000? eth_getWork retrieve ...
3
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5answers
392 views

Smart Contract public chains, other than Ethereum mainnet

As a DApp developer I am concern about the costs of transaction on Ethereum mainnet. Every DApp interaction with the Smart Contract is having a cost between 1$ and 50$ depending on the data size and ...
3
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1answer
325 views

API to enumerate the blocks from a specific day

I'm trying to find an API that lists all the blocks from a specific day, as we can do with bitcoin: https://blockchain.info/pt/blocks/1515628800000?format=json I've searched etherscan.io and ...
4
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3answers
2k views

What is the most efficient way to read ERC20 balances without knowing the tokens that the address might hold?

There are plenty of examples of reading the balance of an ERC20 token from an address via a balanceOf.call when knowing the token contract address beforehand. However, how would one go about reading ...
0
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4answers
1k views

How can I get source code of deployed contracts

I'm doing a hobby project of blockchain exploration project. One thing I'd like to do is to see what contracts are deployed, maybe do some exploration analysis. One thing I'd like to see is the ...
3
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1answer
288 views

What is the shared nibble of this extension node?

I have an extension node here: Key: 000b17906abb9f83c5e190bc3d0bed212e66bf44d99997c53c2071e1413194b6 Value: [ 3866a6d45a815576000da23c1a017179233e9d6437806aef7c2264588739d0, ...
1
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1answer
702 views

Create our own field with transaction data in privatenet [duplicate]

I know we have 'data' field to add any comments but is it possible to add our own field based on the application ie; a field like 'purchased products' which will have purchased products of a user ...
0
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1answer
246 views

Ethereum Explorer without a full node

Assume a blockchain is running on a set of servers. Question 1: Can a thin client (who does not have a full node like Geth) use Ethereum explorer to see the transactions sending to the blockchain? ...