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Questions tagged [explorers]

Questions related to the blockchain explorers

1
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1answer
33 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?
0
votes
1answer
232 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
vote
1answer
56 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
47 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
31 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
66 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 ...
0
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2answers
233 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
vote
1answer
96 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 ...
0
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2answers
29 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
votes
1answer
55 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
25 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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1answer
62 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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3answers
49 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 ...
4
votes
2answers
397 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 ...
3
votes
2answers
513 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/...
1
vote
2answers
295 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
85 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
votes
5answers
346 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
votes
1answer
157 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
votes
3answers
841 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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0answers
437 views

Etherscan API not returning transaction data for my wallet

I'm trying to connect to the Etherscan API in order download my transaction history across my cryptocurrency wallets. I've used the following Python code, which works just fine with the sample ...
0
votes
2answers
65 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
votes
1answer
134 views

What is the shared nibble of this extension node?

I have an extension node here: Key: 000b17906abb9f83c5e190bc3d0bed212e66bf44d99997c53c2071e1413194b6 Value: [ 3866a6d45a815576000da23c1a017179233e9d6437806aef7c2264588739d0, ...
1
vote
1answer
362 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
votes
1answer
169 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? ...
0
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0answers
359 views

Latest transactions not showing in etherscan apis for ropsten network?

I was recently going through APIs in etherscan and switching to ropsten network I found an API to view all my transactions regarding a specific account. I did a transaction with metamask and got back ...
1
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2answers
825 views

How to take a snapshot of addresses and balances of all normal addresses?

How would one take an addresses and balances "snapshot" of all 6,086,374 normal addresses at block number 4293752?
3
votes
1answer
548 views

Why is my balance not equal to the sum of inbound, minus the sum of outbound and fees?

I expect to be able to calculate the balance of an account in this way: add up the value on all the incoming transactions, and subtract the value on all the outgoing transactions, then subtract all ...
3
votes
1answer
6k views

Obtain token transfer data from an address

I would like to obtain token transfer data from an address via Rest API For example, take this address: https://etherscan.io/address/0xfbb1b73c4f0bda4f67dca266ce6ef42f520fbb98#tokentxns (Etherscan ...
4
votes
0answers
302 views

API resource for determining all address holders of a contract

I would like a RESTful API for viewing all addresses which holds a balance of a specific contract. It seems that etherscan.io deprecated this feature, or I'm looking at the wrong endpoints Are there ...
4
votes
1answer
1k views

Is there a list of Ethereum Classic block explorers?

Most Ethereum block explorers are only for Ethereum, but not Classic. Is there a list of Ethereum Classic explorers?
3
votes
1answer
103 views

What is the accepted methodology for verifying the integrity of pulled chain data?

What is the accepted methodology of checking the integrity of a chain? If I poll my Geth/Parity node for block data using web3.js how can I confirm that the data returned is not going to be subject ...
0
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1answer
82 views

Methods of attaching data to an ethereum address?

I'm trying to setup a system where you can attach a name and website url to an ethereum address. Then have it get called back in an ethereum block explorer I'm building. What are some ways where a ...
6
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2answers
10k views

Ethereum Private chain Explorers [duplicate]

I have created a private blockchain by initializing a new Genesis block. Created few accounts and have now substantial amount of Ethers as well. I am able to deploy and execute my contracts on this ...
3
votes
2answers
748 views

etherparty/explorer issues: “Allow Access to Geth and Refresh the Page”

Does anyone here have experience with the etherparty/explorer blockchain explorer? I am having trouble connecting. I keep getting the error message "Allow Access to Geth and Refresh the Page" ...
1
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0answers
132 views

What ETH blockchain explorers do you use and what features are missing? [duplicate]

(It is not a duplicate. We want to get the feedback about missing features. Thank you) There are different ETH blockchain explorers: etherscan.io etherchain.org ether.fund ether.camp ... We (...
2
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0answers
59 views

Access to list of internal transactions via etherscan API [duplicate]

Is there any way to get a list of all of the internal transactions which affect an account, as presented on the etherscan "internal transactions" page on etherscan, using their API? Or any other ...
1
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0answers
1k views

understanding etherscan.io blockchain explorer (ropsten)

I am new to eth. I tried to explore the blockchain using etherscan. For the record, here is my eth address: (0x757e0617fae3050242ddd13e2117ef1c62fdaf4d). There are three things in etherscan's page ...
9
votes
3answers
4k views

How could “ethereum block explorer” connect into geth that is already running on the main server securely?

I am working on private Ethereum Network. I run Ethereum boot-node and Ethereum Block Explorer app ( https://github.com/etherparty/explorer (A lightweight ethereum block explorer.) ) on the main ...
3
votes
1answer
1k views

Why does etherscan.io API response with wrong balance?

Let's take the following company. The current ETH Balance is 268,691.327038426 Ether: But API response 268698327038426745609145: As you can see API response does't contain floating point so the ...
5
votes
1answer
4k views

Which open source ethereum blockchain explorer is the best for private chain? [closed]

I have got eth-net-stats deployed with my private ethereum chain, but apparently it's far from being a real blockchain explorer. Are there any good open source blockchain explorers for private ...
4
votes
1answer
92 views

Are there apps to see total ether processed through a contract?

Building a TipFaucet for tipping a dev. Using this contract, is it possible to look up how much has been payed through the contract? contract TipFaucet { modifier isDev { if (msg.sender != // ...
5
votes
2answers
1k views

How do block explorers actually work?

How do block explorers interface with a chain differently than full nodes? Would it be possible to integrate block explorer features into a full node implementation in the future?
1
vote
1answer
870 views

Find out latest block hash in Ethereum using JSON-RPC

I am developing an ethereum block explorer in PHP and have established an JSON-RPC communication with my server geth node successfully. Nevertheless, I am kind of stuck when trying to find out the ...
0
votes
1answer
55 views

Ethereum and bullying and possible coersion to delete by third parties [closed]

I am new to Ethereum. I want to use Ethereum to allow the voice of a number of oppressed groups I have knowledge of to be: voiced spread accessible from anywhere and unhidden anonymously contributed ...
4
votes
0answers
353 views

How to create my own wallet and own blockchain explorer?

I'm running my own private/permissioned ethereum blockchain via geth on Ubuntu. How can i interact with my blockchain to visualize accounts, blocks, transactions etc...? I've tried a lot of tutorials ...
7
votes
1answer
1k views

When do transactions on an exchange appear on etherscan?

Hopefully my question is self-explanatory. For example, I purchased some ether on Poloniex today. Within what time frame is that transaction likely to appear on etherscan?
11
votes
1answer
947 views

Out of gas during contract creation

A few days ago, several attempts at creating a contract failed with out of gas errors (confirmed by etherscan/ethercamp and getBalance API), however it is not clear to me what failed exactly, and how ...
7
votes
1answer
498 views

How many Ethereum contracts have been published?

Is there a place to see how many Ethereum contracts have been published? If someone wanted to calculate that, it would just be total number of accounts minus accounts with code, right? Any ...
6
votes
2answers
597 views

How does etherchain access and query Ethereum blockchain transaction data?

Can whatever method that etherchain are using to access and query the blockchain data also be leveraged by the average web developer in a garden variety web app using a remote call? Or, are etherchain ...