New answers tagged blockchain
1
Seems like scam to me too. Nevertheless the transaction does not go through as long as this is not a valid address.
BTW you should not post the real address here...
4
355CXardXvii8T4MNbBaQbfJD7YQNdUf5 is not a valid address. It is not possible to send anything to it.
Who is the "sender" and what did you give them in return? This smells like a scam to me, if someone is claiming they accidentally sent to an address with a character missing.
Also, you're aware 131.8 BTC today is valued over 6 million USD?
0
what if you are missing the last block, so when you receive the new block you cant see where its supposed to go since you dont have the previous block,
You then request that missing block from your peers.
https://en.bitcoin.it/wiki/Protocol_documentation#getblocks
https://en.bitcoin.it/wiki/Protocol_documentation#getdata
https://en.bitcoin.it/wiki/...
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You're not misunderstanding anything, and there is nothing that prevents that.
Value of these items is similar to art: you trust the author/reproducer not to misrepresent how many copies exist, but there is nothing to prevent them from doing that (regardless of whether that happens on one chain or on multiple), except perhaps their reputation or loss of ...
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Yes networks that are cut off from one another, cannot intercommunicate and therefore cannot transact with one another.
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I think this is the wrong place where to ask, but I know that also it is difficult to find a place where ask this question (maybe).
I would add an answer to this question because I made research in my bachelor's degree, where we analyze the bitcoin graph, but at the same time, I developed a way to make also a useful serialization of the blockchain with ...
4
Trades on exchanges are not reflected on the Bitcoin blockchain, there are many orders of magnitude more of them than the total number of transactions ever made in the networks history. The only source of information about what exchange transactions have happened is the exchanges themselves, and they expose no identifying information about who made them.
3
You have the wrong elliptic curve parameters in your PEM file. Bitcoin uses secp256k1, but you have (copied) the curve parameters for NIST P-256 (aka secp256r1).
algorithmIdentifierParameters should be b'\x06\x05\x2b\x81\x04\x00\x0a' for secp256k1.
2
Spendable funds in Bitcoin are tracked in the form of Unspent Transaction Outputs (UTXOs). Each transaction consumes some existing UTXOs in the inputs, and creates new transaction outputs to assign recipients funds. Every full node keeps track of the entire set of spendable balances in a datastructure we call the UTXO set. While you can think of the ...
6
How does a miner verify that the funds are available and not already spent without iterating through the entire Blockchain?
Full nodes do iterate through the entire blockchain, but only once. As they work through the chain's history, they create and continuously update a 'UTXO set', which is just basically a list of all valid coins. With each new block, the ...
3
Tl;dr: Bitcoin is cash, not a bank account.
Mints don't keep track of which people hold each of their coins or how much of their cash each person holds.
Mints provide users of their coins with some ways of distinguishing genuine coins from forged coins.
How are funds verified?
They aren't. The Bitcoin network doesn't know about or care about funds. It ...
3
How does a miner verify that the funds are available and not already spent without iterating through the entire Blockchain?
In order to know all the unspent transaction output you need the entire blockchain. This is what "full nodes" do. Full nodes look at the entire blockchain all the way back to the genesis block.
"Simplified payment ...
0
i know what's bip32 but couldn't find any effective way to use it. can anyone help me with that? thank you
Use NBitcoin or NBXplorer
There are no better libraries for C# developers in Bitcoin. These libraries also support some altcoins although questions related to altcoins are offtopic here.
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As a miner, you can pick and choose which transactions you include in the blocks templates you are working on. Usually, miners will choose the transactions that pay them the highest fee rates, and while this is not required, it is the most economically viable approach, which is important in a highly competitive industry.
The only way miners could 'attack' ...
0
Did you set up your wallet yourself? Blockchain wallet's are often used by scammers, because it's easy to set up watch-only wallets where you are actually seeing funds controlled by someone else. If you did not set up your wallet yourself, you should check whether this is the case.
Otherwise, check on a block explorer whether the transaction went to the ...
0
'Metaverse' seems like a buzzword these days, but to answer you question quite generally:
The invention of the internet allowed humanity to find all sorts of new ways to share and exchange information. We keep creating more and more ways to share more and more data, and perhaps AR/VR/metaverse tech will help continue this in the future.
The invention of ...
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There is no need.
If disk space is an issue, run a pruned node. Those still fully validate all transactions, only don't store them after validation.
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There is a well explained article in harmony website you can read https://blog.harmony.one/peer-discovery-in-harmony-network/
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Timestamps in Bitcoin, including block timestamps and nLocktime values, are unsigned 32-bit.
The last possible timestamp is Feb 7th 2106, at 06:28:15 UTC.
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When validating a block, the verifier has to know all the transactions in full.
So they can just recompute the Merkle root from the transaction hashes, and compare it with the one stored in the block header.
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In secp256k1 there are 2256 possible keys. Pollard's kangaroo algorithm (and other known algorithms) run in time square root of the number of keys. So the algorithm would take ~2128 steps. This is completely infeasible. Just as a comparison: Bitcoin's hashrate is 160M TH/s. That's 160 million * 1 billion hashes per second. Say all of bitcoin's miners would ...
0
if your private key starts with 6 you have find the password.
or brute force it to find password.
if it doesn't start with 6 you can import to ant wallet or you can sweep it to your new coinomi wallet
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