Questions tagged [blockchain]
The journal of all confirmed Bitcoin transactions. The blockchain consists of a linked sequence of blocks and each block contains a list of transactions.—Please use [blockchain.info] for the eponymous UK-based company.
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Suspect mail received form "[email protected]" [duplicate]
I received this mail form which process began from a Company https://www.trustlaw-limited.com/ (Lawyers Company ?!?).
Can anyone nforme me if this real or a scam?
Thank you very much!
From:
info@val-...
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If i have a pending bitcoin deposit and close the account will the bitcoin return to sender? [closed]
I have a pending Bitcoin transaction on Cash App.Cash app would not allow me to refund or reverse the bitcoin transaction. So if I close my cash app will the pending bitcoin transaction reverse to ...
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How do I find my purchase on the block chain?
I remember purchasing bitcoin on April 15 of 2011 and I thought it was $775 or even $800. Considering that I do not know the transaction fee, how do I find this on the block chain so I can see where ...
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Can I recover my investment? I've been scammed [duplicate]
I am a victim of a scam. There is a company saying that they can recover what was stolen, it's almost 200 k euros and according to them, I am required to top up the balance of your secure crypto ...
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If SHA256 is successfully attacked, will we need to replace the hash function and re-timestamp the entire blockchain from the beginning?
If SHA256 is successfully attacked, what measures will be taken to replace the compromised hash function?
In the event of a SHA256 attack, will it be necessary to re-timestamp the entire blockchain ...
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Can a Second Signer Add Data to a Bitcoin PSBT Transaction?
I'm working with Partially Signed Bitcoin Transactions (PSBTs) and have a question about the capabilities of secondary signers in the signing process. I understand that in a multi-signature scenario, ...
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Implementing Conditional Fund Locking in Bitcoin Similar to Ethereum's Smart Contracts
I'm familiar with how Ethereum allows users to lock funds in smart contracts, which can then be released under specific conditions using mechanisms like the Hashed TimeLock Contract (HTLC) protocol. I'...
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Handling Multi-Signature Transactions with PSBT in Bitcoin
I'm currently working with Partially Signed Bitcoin Transactions (PSBTs) and trying to understand the best practices for handling transactions that require signatures from multiple parties. ...
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synchronizing with network issue [duplicate]
My wallet says synchronizing with network, 3 days behind. I been waiting to receive my BTC from my sportsbook for 3 days and it's just stuck in limbo on blockchain. What's seems to be the problem with ...
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Is PoW an indispensable component in blockchain?
There is an argument that if the Proof-of-Work (PoW) mechanism is removed from the Bitcoin network or if the puzzle does not have a sufficient level of difficulty proportional to the computing power ...
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Why changing Bitcoin Cap Limit Is Not Possible
To alter the Bitcoin blockchain protocol, such as increasing the Bitcoin cap, a consensus among the majority (95%) of participants is necessary due to decentralization and the consensus mechanism.
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Blockchain sync seems to be stuck in a loop?
SOLVED! UPDATE: The issue was not bitcoin related. I had to increase the root partition of ubuntu, as it wasn't using the full SSD size I had, but only 100 GB and the sync therefore ran out of space ...
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Do nodes periodically check block hashes?
I am aware that, in Bitcoin, blocks are immutable because of the Merkle tree structure, which ensures that every block contains the (Merkle root) hash of the previous block.
Thanks to the properties ...
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Is it possible to run RPC commands without installing the entire Bitcoind
I am interested to run bitcoin mining https://github.com/jgarzik/pyminer/blob/master/pyminer.py , I understand that it inherently calls bitcoind to run some RPC commands to broadcast once a nonce is ...
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What do I do if I bought Bitcoin in 2009 or 2008 [duplicate]
I want to find the Bitcoin I purchased in the past by paying 100,000 won.
I remember back then that I made the purchase by bank transfer or phone small payment. Is this the right way to purchase it?
I ...
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