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6 votes
3 answers
126 views

Is there a method to prove that data has been fetched from a block on a blockchain?

I'm considering a problem that I havent seen someone else look at yet. The problem statement is how can we prove that some data (e.g., a transaction, a block header) has been fetched from a block of a ...
Mostafa's user avatar
  • 61
0 votes
1 answer
155 views

How to get consensus layer data for many blocks in a single RPC call?

You can get consensus related values such prevrandao and validator details with eth_getBlockByNumber or eth_getBlockByHash, but how can you get this data for many blocks without making thousands of ...
user72364's user avatar
  • 135
0 votes
0 answers
80 views

I'm running a private Geth PoA chain and my signers are failing to start due to a "gap in the chain between ancients". Is there any help I can get?

So the title doesn't include steps I've tried, given that there are character limits. The long and the short of it is that I'm running a private geth PoA chain and my signers/sealers were getting a ...
This Guy's user avatar
1 vote
4 answers
103 views

Specific Block Data?

How can I get data from a specific block in the past? Does node providers support archive node? Any suggestions are welcome.
Tien's user avatar
  • 193
1 vote
1 answer
93 views

Scanning for fresh wallets and deployer connections

My main goal is to listen for fresh wallets buying launches of a erc 20 token. We all know fresh wallets (funded from a central exchange) could be created by insiders or friends of developers. Or ...
James Livingstone's user avatar
2 votes
0 answers
47 views

Can we modify geth that not store any blockchain data?

Is it possible to run a modified geth that just logs data of the new block and doesn't store any blockchain data in database?
Huy Duan Tran's user avatar
1 vote
0 answers
52 views

How do you find every self-destructed contract using geth?

I'd like to use my go-ethereum node to find every self-destructed contract in the history of Ethereum and get their addresses. What is an efficient way to do so?
Jesbus's user avatar
  • 10.5k
0 votes
3 answers
2k views

How to determine whether an address is an EOA or a contract address?

I want to label each ethereum address whether it is EOA or not. I'm thinking of the following method. Scan all transactions whose "to address" is the address to check. if the "input&...
nakaakist's user avatar
  • 136
0 votes
1 answer
501 views

Can I put html code as an onChain NFT?

Can I put html code as an on-chain NFT? I don't want the NFT to be an image, I would like it to hold html code. e.g the NFT will be Hello world
Shai Kimchi's user avatar
3 votes
2 answers
5k views

how to Get All tokens against a specific Walllet Addresse?

Is It Possible to get All tokens against a specific wallet Address , whether it is deployed on a ethereum blockchain , solna , polygone or whatever ?
user103592's user avatar
3 votes
1 answer
6k views

Get all transactions from blocks in a range of blocknumbers web3

have seen similar post before, but can seam to get anything working. I am trying to pull block data (mostly all transactions) from a range of blocks (startBlock-endBlock) but keep getting errors or ...
DataDope's user avatar
3 votes
2 answers
5k views

Get full transaction list of an ethereum address using JSON-RPC

I'm currently developing a Java application which communicates with Geth using JSON-RPC. I managed to implement something like @rustyx suggested on this thread using an HTTP connection, but it's too ...
Mattia Monari's user avatar
0 votes
2 answers
166 views

How to access mainnet data on Rinkeby?

I am writing a smart contract that uses the CryptoPunks data smart contract. This contract has a public read function punkImageSvg() that returns a string with the SVG of the punk in question. The ...
Tom's user avatar
  • 133
0 votes
1 answer
421 views

Getting count of Ethereum transactions per day

I’m trying to write a call to get count of eth transactions per day, without using a pro api subscription. Anyone has some ideas about how to achieve this, maybe using an infuria.io project api? ...
DataDope's user avatar
0 votes
1 answer
277 views

AnyswapV5ERC20 deployment - set totalSupply

I have some questions about the anyswapV5ERC20.sol contract. First of all, are there some more detailed docs than the guide of andre cronje? My main question is: How can I set the totalSupply or mint ...
MaTok's user avatar
  • 331
0 votes
1 answer
338 views

Ethereum raw transaction structure

I'm trying to learn the raw transaction data structure for Ethereum. Here my transaction (ropsten network) : ...
GrindCode's user avatar
  • 365
1 vote
1 answer
79 views

What exactly is the role of Oracles like Chainlink in decentralized insurance?

I am from the insurance industry, and I'm trying to understand if there's any value that blockchains and smart contracts can provide in this domain. I'm trying to understand things at the conceptual ...
Kristada673's user avatar
3 votes
1 answer
2k views

How to Collect Uniswaps Token-pair FULL Price history? ( Help )

How do websites like CoinGecko.com and Dextools.io get a token pair's FULL price history? I understand that I can query Uniswap's theGraph, but that limits only 1000 entries. How do these websites ...
tomi lui's user avatar
0 votes
2 answers
107 views

Does blockchain state information take up space?

When synchronising a new full node, the first step is to download all the available blocks, it's interesting to note that the node is not usable right away as it needs to pull from the network all the ...
Cristofor's user avatar
  • 133
0 votes
1 answer
30 views

Accessing contract data for offchain analysis

We want to run some analytics off chain. What’s the best way to get the full data of a public mapping? Need to get all addresses and their balances. Here is an example, https://github.com/pancakeswap/...
Pasta's user avatar
  • 101
0 votes
1 answer
34 views

Fictitious use case to send confidential data

I am designing the network architecture of a Fictitious agency that needs to send confidential data. So my questions are: Is it possible to send images through the Ethereum network? I've read that, ...
Drago's user avatar
  • 13
6 votes
1 answer
922 views

I can no longer access old blocks via RPC in full syncmode?

I have a private network based on geth v1.9.25. I upgraded from v1.8.27. Recently, I saw that I'm unable to access the previous blocks at all. Like, e.g. eth.getBlockByNumber(1) gives me null, even ...
ygh's user avatar
  • 205
1 vote
1 answer
486 views

Geth fails after move of freezer content to new SSD, sites gap in Ancient and leveldb

I'm attempting to split my chaindata files across two Samsung T5 SSDs. Mounted the new SSD at /media/t5 and copied the 'ancient' chaindata subdirectory files with cp -r /var/lib/goethereum/geth/...
brianfit's user avatar
  • 146
0 votes
1 answer
835 views

Json RPC eth_sendTransaction data parameter

I have a question concerning the data parameter of the json RPC method eth_sendTransaction. Is it possible to send any kind of data structure with this method to a smart contract? Is it possible to ...
Jwf's user avatar
  • 3
3 votes
1 answer
106 views

Where does Turbo Geth store its data files?

I recently started using TurboGeth and I have a question. Where does Turbo Geth store its data files?
Thomas Jay Rush's user avatar
1 vote
0 answers
35 views

Why does ethereum chaindata sometimes sync while syncing?

I am doing a fresh geth 1.9.18-stable sync, which I believe is fast by default. I am keeping an eye on the size of the .ethereum/geth/chaindata/ directory and have noticed that it does not increase ...
spraff's user avatar
  • 645
2 votes
2 answers
315 views

Copying Private chain data to another private chain

I have two independent private chains running with unique genesis file each. If we use same accounts in both the chains is there a way to copy the state or data of chain 1 to chain 2. Regards, Manoj
Manoj Kumar's user avatar
5 votes
1 answer
2k views

Geth Fatal: Error starting protocol stack: gap in the chain between ancients and leveldb

I'm running a Geth mainnet node. As the size of chaindata is rapidly rising, I moved ancient to an auxiliary HDD plugged in to the same system. Some time afterwards (not sure when, maybe days?) I ...
The Renaissance's user avatar
9 votes
3 answers
5k views

Can chaindata be split across two (or more) locations?

With the size of full nodes rapidly growing, I'm looking for a way to split my chaindata across multiple hard drives. I have one internal 1TB SSD capable of syncing the chain, and then an internal HDD ...
The Renaissance's user avatar
1 vote
1 answer
103 views

Some transactions dated as 1970

I am currently analyzing ethereum data from google big query and and some transactions are dated as being from 1970-01-01. I assume that has to do with how date is stored since it is in seconds from ...
Tank's user avatar
  • 127
1 vote
2 answers
69 views

Ethereum Miners and Gas - Analyzing Chain Data

Currently looking at https://medium.com/google-cloud/how-to-query-balances-for-all-ethereum-addresses-in-bigquery-fb594e4034a7 and in the SQL Query to calculate address balances there is a part for ...
Tank's user avatar
  • 127
0 votes
1 answer
437 views

Google Big Query Traces vs Transactions

Doing some work on google bigquery ethereum data and am a bit confused by traces vs transactions. It seems that transactions are a subset of traces? with more info?
Tank's user avatar
  • 127
0 votes
1 answer
144 views

should I stop geth for copying /chaindata to another machine?

Since I've made stats from geth full node by calling rpc api, it is burdensome for me to stop geth a few hours. Nowadays my local machine uses about 95% disk, so I want to migrate my /chaindata to ...
obanadingyo's user avatar
1 vote
3 answers
64 views

How permanent is data stored in Ethereum?

Does it all depend on the availability of nodes? What if say there's 1 node left in Ethereum, will that node contains the entire blockchain?
vocotipex's user avatar
0 votes
1 answer
65 views

In ethereum network how data structured and is every data stored, is public?

Let's say, 3 companies are using ethereum network. Company A Company B Company C Company A put some data, block01 and block02. So ethereum network looks like, Genesis Block -> block01 -> block02 ...
Shams Nahid's user avatar
1 vote
0 answers
356 views

Read data from parity .sst Files

I'm working on a c# application that reads the data from ethereum parity and parses it. As of present i managed to read the key value pairs from the files and convert them to hex. While looking at the ...
K.Bezz's user avatar
  • 21
2 votes
2 answers
1k views

Is it possible for multiple geth processes to share chain data?

I would like to know if it is at all possible to have multiple geth processes share the same chain data. I currently have multiple nodes (for a private chain) connected to the same file system via ...
Louis Lamia's user avatar
1 vote
1 answer
128 views

Can we create a token with some data inside it?

I wane to write some data (like a link to some file etc) in a token, and once someone sends it from one address to another, that data should be sent as well. Is there anyway we can do now? or you this ...
Fariha Abbasi's user avatar
2 votes
1 answer
263 views

Is it possible for the miner of a block to be address 0x0?

Take a look at this transaction: https://etherscan.io/block/5305. The miner is listed as 0x0000000000000000000000000000000000000000. Is this reasonable? Did someone configure their node incorrectly? ...
Thomas Jay Rush's user avatar
1 vote
1 answer
213 views

Ethereum Block Pattern change

I want to know how block data get added to the leveldb chaindata in Ethereum . So that i can change the pattern of block. Basically i am creating my own private ethereum blockchain. And i want to add ...
NilayShah's user avatar
2 votes
1 answer
2k views

Get full archive node data

I am synchronizing the archive node of the ethereum. Syncronization speed depends on the speed of the ssd disk and synchronizes with the speed 0.3 blocks per second. Now the 2700000 block is coming. ...
user1941407's user avatar
2 votes
1 answer
1k views

Backup of Ethereum Node

I want to know how to take a backup of Private Ethereum Blockchain (chain data folder) while the chain is running. The problem is that suppose my chain height is at 1000 and it gets crashed or if I ...
FLASH's user avatar
  • 263
0 votes
2 answers
502 views

How is Ethereum Blockchain immutable?

I deleted a file from my Ethereum 'Chaindata' directory, the blockchain got reset and all the accounts and mined blocks were gone. Also, I could add random text into one of the log files. How does ...
Akhil Kintali's user avatar
3 votes
1 answer
2k views

Whats is the Ethereum blockchain size?

Another question regarding Ethereum chain size I downloaded the blockchain with geth in fast mode the weight is 14Go, but i can see on https://etherscan.io/chart2/chaindatasizefast that it is in geth ...
peekpoke's user avatar
0 votes
1 answer
118 views

Threat detected in geth/chaindata: Mirror-4130

Virus detection just picked up a threat, called Mirror-4130 in ~/Library/Ethereum/geth/chaindata/6902332.ldb Has anyone else seen this, and/or can explain a bit how the chaindata directory works? ...
Vinnie James's user avatar
0 votes
2 answers
54 views

Is there a GUI way to import chain data and what would be best practice?

I am trying to copy over chain data from one machine to another. Is there a way in the GUI to do this? Is there a how to/best practice for putting 300+ GB of chain data on new machine and launching ...
Ethone's user avatar
  • 1
1 vote
1 answer
597 views

Geth syncing gets close to latest block and then stops

I have a new node that gets close to the latest block and then stops syncing. Each time I stop and then restart geth, it will sync back up to about 75 to 100 blocks away from the latest block and ...
John Conger's user avatar
8 votes
2 answers
6k views

LevelDB in Geth, key and values

When parsing through the levelDB or RocksDB (Depending on the client you are using) there are string values representing the key and the value. These are both stored as Byte arrays as well. My ...
Fortune's user avatar
  • 522
0 votes
1 answer
224 views

get back to Ropsten: reclaim address after deletion of genesis block & /testnet/geth/chaindata

Recently I've been playing around with JPM's Quorum. It's similar to go-ethereum (goethe) in many ways, but one of the key differentiating factors is that it has a genesis block which isn't the same ...
smatthewenglish's user avatar