Questions tagged [explorers]
Questions related to the blockchain explorers
68
questions
2
votes
1answer
18 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
votes
2answers
31 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/...
0
votes
2answers
26 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. ...
1
vote
2answers
46 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
votes
1answer
40 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 ...
0
votes
0answers
12 views
How to find which transaction cleared a specific address into a specific contract?
I have a contract with contains the following solidity code
mapping (address => mapping (bytes32)) public sealedBids;
But I failed to find in the solidity code which part can clear it.
As result,...
1
vote
0answers
17 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
vote
1answer
82 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
2k 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
202 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
vote
0answers
59 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
vote
0answers
33 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
votes
1answer
165 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
vote
2answers
911 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
205 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
votes
2answers
42 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
62 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
votes
0answers
27 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
votes
1answer
92 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
votes
4answers
57 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
votes
2answers
843 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
votes
2answers
914 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
487 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
votes
1answer
120 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
367 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 ...
asked Jan 19 '18 at 17:31
Juan Ignacio Pérez Sacristán
2,7333 gold badges24 silver badges57 bronze badges
3
votes
1answer
215 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
1k 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
votes
4answers
243 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
187 views
What is the shared nibble of this extension node?
I have an extension node here:
Key:
000b17906abb9f83c5e190bc3d0bed212e66bf44d99997c53c2071e1413194b6
Value:
[
3866a6d45a815576000da23c1a017179233e9d6437806aef7c2264588739d0,
...
1
vote
1answer
539 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
217 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?
...
1
vote
2answers
1k 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
787 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 ...
5
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 ...
5
votes
1answer
462 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 ...
3
votes
3answers
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
132 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
votes
1answer
86 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 ...
7
votes
2answers
13k 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
962 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
vote
0answers
135 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
votes
0answers
100 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
vote
0answers
2k 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 ...
4
votes
1answer
2k 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
5k 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
93 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 != // ...
6
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
2k 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 ...
asked Aug 1 '16 at 12:14
Juan Ignacio Pérez Sacristán
2,7333 gold badges24 silver badges57 bronze badges
0
votes
1answer
59 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
...
