Bitcoin Q&A: Locking Scripts and Transaction Verification
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- Опубликовано: 26 сен 2024
- Explain the locking and unlocking scripts in transactions. How are transaction signatures verified by nodes and miners? What happens to unconfirmed transactions from orphaned blocks? Do non-mining nodes get a reward?
These questions are from the third and fourth sessions of MOOC 12, which took place on September 27th and October 4th 2019. If you want early-access to talks and a chance to participate in the monthly live Q&As with Andreas, become a patron: / aantonop
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Andreas M. Antonopoulos is a technologist and serial entrepreneur who has become one of the most well-known and respected figures in Bitcoin. He is the author of “Mastering Bitcoin,” “The Internet of Money" series, and "Mastering Ethereum."
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So a transaction starts with a sender unlocking a previously locked script using the scriptSig for that previous transaction (BTC that was 'sent'' previously to the sender, who is now using this to create a new overall script to spend this BTC in a new transaction). But this is not the scriptSig in the new transaction's overall script. The scriptSig in the new transaction/overall script refers to the receiver's unlocking script (i.e. the scriptSig is made up of the receiver's PubKey and digital signature, that is needed to concatenate the scriptPubKey, completing the overall script and if evaluated as TRUE, allowing the receiver to spend the BTC). Is this correct?
Mr Antonopoule have you got any videos on greek language? It would be better for me to understand the crypto world. So please if you want send a link. I would appreciate it. Thanks
Wow this is very interesting how private keys are verified by public keys and this is done via a mathematical trick that makes the private key still undetermined yet it is proven. I would like to understand that proof ;)
How long can a transaction remain in the mempool?
each mempool is different per miner
Hi Andrea
Thanks for sharing your knowledge, your content is much appreciated.
I've noticed 3 different bitcoin address prefixes,
addresses beginning...
with 3: BASE58 (P2SH)
with bc1: BECH32 (P2WPKH)
with 1: BASE58 (P2PKH)
Are there any significant differences, advantages or disadvantages in using bitcoin wallets of a specific address type over the others two types?
eg is one address type more secure, more resistant to quantum computing than the others?
Many thanks
I forget what the purpose is. I think it had something to do with all possible addresses being used up. So more formats creates to negate this.
Address re-use negation.
I don't understand s..t!