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Results tagged with transactions
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user 264
The term "transaction" is used in Ethereum to refer to the signed data package that stores a message to be sent from an externally owned account.
3
votes
How can we address the security issues related to the executing of malicious codes?
You can upgrade a contract based on the DELEGATECALL opcode and the SUICIDE opcode.
Obviously only a throughout pentesting can asses malicious code.
- 11.7k
13
votes
Geth - How to clear queued transactions?
Queued transactions are transactions where the transaction nonce is
not in sequence. The transaction nonce is an incrementing number for
each transaction with the same From address. … What is the max size of transactions can clients like geth keep in txpool? …
- 11.7k
3
votes
How can we reduce the transaction time in ethereum?
If you run on the public net then probably the best is to spend more transaction fees so that your transactions will be mined with higher priority. …
- 11.7k
4
votes
How do exchanges work with Ethereum?
You can write javascript code to open accounts and start transactions to your cold wallet. …
- 11.7k
7
votes
Accepted
Reading values from a contract: When do I need transactions?
Use constant functions
To make sure that the function can be called without transactions use constant. …
- 11.7k
3
votes
Accepted
How does (current block number - block number of a given transaction) gives the confirmation...
Blockchains use a proof of x system to confirm the validity of a transaction by a random miner. The miner confirms that the source of the transaction is valid. He does so by looking at the block befor …
- 11.7k
16
votes
1
answer
7k
views
Structure of a transaction receipt
What does it mean line by line?
Result: {
"blockHash": "0xe6b110c9167d9aabeb13b02a7b9358d879426474a79170403d67da33a391dbdc",
"blockNumber": 665,
"contractAddress": null,
"cum …
- 11.7k
0
votes
Public keys of owner and sender of a smart contract
For the Solidity contract language:
Whenever you send a transaction to a contract
to call a function,
to transfer ETH to the contract (here you use an anonymous fallback function function() {...}
…
- 11.7k
3
votes
Accepted
What does TheDAO counter-attack by spamming actually do? (suggested by Stephan Tual)
More here: http://vessenes.com/deconstructing-thedao-attack-a-brief-code-tour/
The transactions create many empty contracts. By doing so the spammer gets comptition. The empty contract creations. … It defines
the maximum amount of gas all transactions in the whole block combined
are allowed to consume. …
- 11.7k
7
votes
Accepted
Is a fully private blockchain network immutable?
Private or permissioned? No, a private blockchain owned by one party is by definition not decentralized and therefore pointless. A central authority or a collusion of bank branch managers can anytime …
- 11.7k