4 votes
Accepted

Does --no-ancient-blocks affect on trace_call for the pending block?

Per the Solidity docs: https://docs.soliditylang.org/en/v0.5.3/units-and-global-variables.html#block-and-transaction-properties Transactions can only access at most state that is 256 blocks old. That ...
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2 votes
Accepted

Getting accounts involved in internal transactions

You'll need to actually go through and parse the JSON to get that. Specifically the action block. See the JSONRPC call trace_replayTransaction here: https://openethereum.github.io/JSONRPC-trace-module ...
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2 votes
Accepted

How can I tell if the node I am using is exposing the Parity trace methods?

You can try running a trace cURL in your terminal to the node, like: curl --data '{"method":"trace_transaction","params":["0x99ac150336f74125702bb87598677c97474c5783a9258049d98377ab0773f73d"],"id":1,"...
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  • 76
2 votes
Accepted

What is DTOs in Ethereum?

The answer is to be found in the link you provided: There are various RPC Data transfer objects for Block, Transaction, FilterInput, and BlockParameter, to name a few. I agree that they could have ...
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2 votes
Accepted

Is it possible for an address to be both controlled by a smart contract and a key?

I had the same question not that long ago and the answer is in EIP-3607. Ethereum addresses are currently only 160 bits long. This means it is possible to create a collision between a contract ...
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  • 5,359
1 vote
Accepted

Ethereum block time assessment

Let's quickly discuss Ethereum's proof of work. Block time is so small(3sec).In such case, multiple blocks can be solved at the same time, if so, one of the blocks will be discarded and another one ...
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  • 5,359
1 vote

multiple debug_traceCall

No, multiple traces are not available in Geth. You can trace transaction, trace blocks, but not multiple calls Sources for your reference: https://github.com/ethereum/go-ethereum/blob/master/eth/...
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  • 3,396
1 vote
Accepted

Is there a way to analyze the contract trancsaction trace result like Etherscan?

What you have is part of the solution. You also have to look at events from that transaction. So eth_getTransactionReceipt will return the logs (and other data that will be useful for you.). also look ...
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1 vote

Is there a way to analyze the contract trancsaction trace result like Etherscan?

Truffle Plugin Debugger (formerly Truffle Teams) can help: https://github.com/trufflesuite/truffle-plugin-debugger
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  • 438
1 vote

Getting accounts involved in internal transactions

Usually Events are used to achieve this (since decoding the transaction data is rather cumbersome). The smart contract you linked to as an example unfortunately has no events, but since it seems to be ...
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  • 665
1 vote
Accepted

Recovering of Parity 1.7.8 wallet - integrating to Open Ethereum

I was in pretty much the same situation, except that I used an even older version of Parity (circa 2017) originally. Easiest, not very secure The easiest solution for me was to use MEW (myEtherWallet) ...
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  • 26
1 vote

Is geth / parity an on-chain or off-chain node?

geth/parity implement the functionality of the nodes of the blockchain network and actually constitute the blockchain network
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  • 1,135
1 vote

How much mining before I achieve a coin?

This is dependent on mostly two factors: The amount of hashes your hardware can solve per time unit The current network difficulty The first factor is fully up to your hardware, so I can't comment ...
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1 vote
Accepted

Eth 2 staking - Required mainet recent blocks

From what I gathered I can say: Warp syncing became to complex so it is no longer made after ~1,000,000 blocks I think Warp syncing takes the same amount of storage as normal syncing, only warp ...
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  • 85
1 vote
Accepted

Extracting blockchain state at a specific block number to interact with deployed contracts

Here is how you can do it using Truffle & Ganache. In truffle-config.js, extend the configuration of your network to something like this: networks: { myNetwork: { host: ..., ...
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1 vote

Gas cost of multiple small transactions vs one large one

Each transaction has itself gas consumption. Calculation of this consumption depends to codes that a transaction triggers them to perform and data size of the same transaction, so called arguments. ...
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  • 375
1 vote
Accepted

Is there any way to do dry run a smart contract on Ethereum Mainnet?

Yes. You can run your own node and synchronize it fully. After that you can import the blockchain data to a local blockchain (Ganache) and use that. Then you can simulate transactions against the ...
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