Category: Cryptocurrency

Additional Bitcoins sent during a transaction

Post author By Crypto Questions
Post date January 21, 2021
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Ive spent a lot of time reading threads but can’t find anything that matches/explains this transaction that has got me worried: I sent 0.05 BTC from my Bitcoin core wallet to my coinbase wallet, but it has remained unconfirmed for 7 days (and counting now) because I set the transaction fee too low. I was […]

Tags and which is set to receive 0.04 btc. And this has got me a little anxious. Apologies if this has already been well explained, but after checking the transaction status and the balance of my wallet, but if anyone can shed some light on what has happened here, but it has remained unconfirmed for 7 days (and counting now) because I set the transaction fee too low. I was expecting this transaction to, I found that actually 0.09 bitcoin has been deducted. Yet the value of the transaction is 0.05. Checking the hash: 4e64fba96a31aaaa623a02f0, I'd really appreciate it. Thanks, Ive spent a lot of time reading threads but can't find anything that matches/explains this transaction that has got me worried: I sent 0.05, one that I didnt specify

Bitcoin Cryptocurrency Mastering Development

Can somebody explain this privacy concern with Bitcoin once and for all?

Post author By Crypto Questions
Post date January 21, 2021
No Comments on Can somebody explain this privacy concern with Bitcoin once and for all?

I have a wallet.dat in Bitcoin Core. I generate a new receive address. I give it to some random person who knows my identity. They send me 1 satoshi to that address. How exactly can they then "know my Bitcoin balance and exactly who I do business with"? I have a wallet.dat in Bitcoin Core. […]

Tags a Bitcoin expert said that this is how it works. Yet it doesn't add up to me, but only what they can do to me. I just don't get how either of those scenarios would make them know anything about me or learn my Bitcoin b, I come away from this kind of discussion with more questions than before..., I have a wallet.dat in Bitcoin Core. I generate a new receive address. I give it to some random person who knows my identity. They send me 1, I'm not interested in what I can do to their privacy, once again, which probably means that I still don't understand Bitcoin. I would highly appreciate a clear and unambiguous answer! Always in the past

Cryptocurrency Ethereum Mastering Development

How can I make Withdrawal with Metamask api?

Post author By Crypto Questions
Post date January 21, 2021
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I have a system, people buy my erc20 tokens through this system. I want to automatically transfer the token to their wallet address when they buy it. how can I do that? Can this be done with the metamask api?

Tags I have a system, people buy my erc20 tokens through this system. I want to automatically transfer the token to their wallet address when they buy it. how can

Cryptocurrency Ethereum Mastering Development

staticcall – what does this code do?

Post author By Crypto Questions
Post date January 21, 2021
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I’m lost, does anyone understand this code? assembly { success := staticcall(sub(gas(), 2000), 7, input, 0x80, r, 0x60) // Use "invalid" to make gas estimation work switch success case 0 { invalid() } }

Tags 0x60) // Use "invalid" to make gas estimation work switch success case 0 { invalid() } }, 0x80, 2000, 7, does anyone understand this code? assembly { success := staticcall(sub(gas(), I'm lost., Input, r

Cryptocurrency Ethereum Mastering Development

How to get the return value of a transaction instead of the transaction receipt in brownie

Post author By Crypto Questions
Post date January 21, 2021
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I have a function in my smart contract called getRandomNumer, and it returns a bytes32. However, in brownie, when I make a transaction it returns the transaction receipt. How do I get the return value? requestId = vrf_consumer.getRandomNumber(get_seed, {‘from’: accounts[0]})

Tags and it returns a bytes32. However, from: accounts[0], I have a function in my smart contract called getRandomNumer, in brownie, when I make a transaction it returns the transaction receipt. How do I get the return value? requestId = vrf_consumer.getRandomNumber(get_s

Cryptocurrency Ethereum Mastering Development

How do I retrieve funds sent to wrong address that doesn’t exist

Post author By Crypto Questions
Post date January 21, 2021
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I sent some funds to my MEW wallet but I fat fingered the address and sent it to a different address that does not seem to exist. How do I claim that address to retrieve funds I see sitting in the block.

Tags I sent some funds to my MEW wallet but I fat fingered the address and sent it to a different address that does not seem to exist. How do I cl

Cryptocurrency Ethereum Mastering Development

Difference between Registrant and Controller of .eth domain?

Post author By Crypto Questions
Post date January 21, 2021
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Usually the registrant and controller are the same for .eth domains, meaning the same Ethereum address appears in both fields, so what does it mean when they are different? Finally, what or who is the Resolver?

Tags meaning the same Ethereum address appears in both fields, Usually the registrant and controller are the same for .eth domains

Cryptocurrency Ethereum Mastering Development

Difference between Registrant and Controller of .eth domain?

Post author By Crypto Questions
Post date January 21, 2021
No Comments on Difference between Registrant and Controller of .eth domain?

Tags meaning the same Ethereum address appears in both fields, Usually the registrant and controller are the same for .eth domains

Bitcoin Cryptocurrency Mastering Development

“At first, anyone could spend anyone’s coins”?

Post author By Crypto Questions
Post date January 21, 2021
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I’ve been watching this Bitcoin video: https://youtu.be/ZIugzFygviw?t=294 At the linked-to timestamp, he claims that: Due to bugs, at first, anyone could spend anyone’s coins! I’m not saying that I think he’s lying, but was Bitcoin really that buggy initially? That’s honestly a bit shocking to hear for me. I did think that Bitcoin was quite […]

Tags and has only been "expanded upon" with BIPs ever since. I did not know that such serious bugs existed early on. Exactly how early are we tal, anyone could just spend those even though only I had the private keys? And this extremely serious bug was somehow fixed without breaking Bitc, anyone could spend anyone's coins! I'm not saying that I think he's lying, At first, back then, but was Bitcoin really that buggy initially? That's honestly a bit shocking to hear for me. I did think that Bitcoin was quite solid from the, he claims that: Due to bugs, I've been watching this Bitcoin video: https://youtu.be/ZIugzFygviw?t=294 At the linked-to timestamp

Bitcoin Cryptocurrency Mastering Development

To test if my wallet.dat encryption password is correct, MUST I spend coins?

Post author By Crypto Questions
Post date January 21, 2021
No Comments on To test if my wallet.dat encryption password is correct, MUST I spend coins?

When a Bitcoin Core wallet is encrypted, you (apparently) have to enter the decryption passphrase only when trying to spend coins. You still get to "use" the wallet as in seeing all the transactions and labels. I’m worried that my saved passphrase (partially on the computer/paper and in my head) is not correct. But to […]

Tags and this would be done again. So I'd again be paranoid that my keyboard has a faulty key or something like that. Is there some way to "test, I had to repeat the passphrase (two times in total) to enter it in the first place, I would have to spend coins... or do I? I suspect that you'll say: "Use the change passphrase feature!" But that would just put me again in, When a Bitcoin Core wallet is encrypted, you (apparently) have to enter the decryption passphrase only when trying to spend coins. You still get to "use" the wallet as in seeing all