Questions tagged [transaction-verification]
Refers to the process of checking the validity of transactions.
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Where is a transaction stored before getting added to the mempool?
A transaction is stored in the mempool before it is confirmed. However, the Bitcoin node can't verify incoming transactions with 'light speed' to add them to a mempool—it obviously needs some time. So,...
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Does running a standard Bitcoin full node mean your node verifies transactions of other members?
If I install Bitcoin Core and run it as a Full Node, will Bitcoin Core automatically verify transactions from other users? So, just by installing a Bitcoin Core Full Node, could I possibly process ...
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How come an `OP_3` P2SH redeem script is spendable?
I completed a round trip transaction with the redeem script hash: 31vFvEkyAb2iusbPip36H9rVt6pxExuaVR, whose redeem script is OP_3 (0x53) (yes I know not secure).
I can understand OP_1 redeem script ...
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Why does the Bitcoin network encrypt the transaction data? [duplicate]
The whole process of encryption sounds useless to me. Miners/validators and full nodes need to verify each transaction. They need two pieces of information:
The original transaction data
The ...
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Need a detailed step-by-step P2PK signature validation example
In the process of validating transactions by hand with a new library in elixir. I am starting with f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16, which is one of the first P2PK ...
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What Lightning Network transaction information is usable to provide a verifiable public index of received payments?
I have in mind a protocol architecture that includes value transfer, where BTC is the unit of account.
To make the protocol scalable I could specify use of the Lightning Network protocol.
In this case,...
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When was the 10,000 B limit for scripts introduced?
The file src/script/script.h defines a MAX_SCRIPT_SIZE of 10,000 B. Among other instances, the MAX_SCRIPT_SIZE is used in the IsUnspendable() check, which allows us to avoid adding outputs with ...
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What rules does a node execute to determine if a transaction is valid and propagate it to other nodes?
How does a node decide whether a transaction is valid and whether to propagate it to other nodes?
Could you please mention some of the basic rules that nodes follow for such a purpose?
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Why does IsCoinBase() check if there is exactly one input?
In the Bitcoin Core source code there is a function to check if a given transaction is a coinbase or not:
bool IsCoinBase() const
{
return (vin.size() == 1 && vin[0].prevout....
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When The Unlocking Script Is Created, Who Verifies The Script?
I am familiar with the many ways an unlocking script is created. But in this scenario, lets use P2PKH. When we generate the unlocking script (excuse the simplicity):
<dup> <hash160> <...
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The true reason bitcoin needs merkle proof for SPV wallet?
I know exactly what merkle tree is, and I know it is used to verify a transaction is in a block with just a hundred of bytes flowing through my network cable (btw do I really lack that megabytes ...
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Is there a way to know how many of currently unconfirmed transactions in the MemPool is currently being attempted by other miners?
Assume there there 100 unconfirmed transactions currently in the MemPool. And the size of a block is such that it's roughly made up of 10 transactions.
Now when a miner completes the Proof of Work &...
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What algorithm do miners use to validate individual transactions in a broadcasted solution before accepting it to their blockchain?
If proof of work is a consensus algorithm that guards against malicious nodes from adding faulty blocks, what actually happens when a miner successfully confirms a fraudulent block (i.e. a block that ...
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Curiosity, Minimal transaction accepted as valid? (zero input/ zero output)
$ bitcoin-cli decoderawtransaction 00000000000000000000
{
"txid": "f702453dd03b0f055e5437d76128141803984fb10acb85fc3b2184fae2f3fa78",
"hash": "...
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Does every single node in the blockchain validate the transactions in the mempool?
I have read several responses to various questions SE. Some responses partially respond to the question so I was hoping to get your help to bridge my gaps in understanding.
Does every single node on ...
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