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Bitcoin Cryptocurrency Mastering Development

Can you explain some of the dynamics that drive the variations in mempool depth?

I often see mempool graphs such as Jochen Hoenicke’s that show significant fluctuations in mempool depth and hence the fee needed to get into upcoming blocks. Can you explain some of the dynamics that are driving these variations? Should I be monitoring and understanding these graphs before making a transaction if I want to choose […]

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Bitcoin Cryptocurrency Mastering Development

Issues decoding the words to transaction hex

I had asked a question earlier about compressing the transaction hex as it was used in a project that involved sending text messages (160 characters limit per message): Compress transaction hex string So I have used a different approach and here’s the project details: https://github.com/prayank23/OfflineTx Converting transaction hex to words is working as expected. I […]

Categories
Bitcoin Cryptocurrency Mastering Development

Issues decoding the words to transaction hex

I had asked a question earlier about compressing the transaction hex as it was used in a project that involved sending text messages (160 characters limit per message): Compress transaction hex string So I have used a different approach and here’s the project details: https://github.com/prayank23/OfflineTx Converting transaction hex to words is working as expected. I […]

Categories
Bitcoin Cryptocurrency Mastering Development

Issues decoding the words to transaction hex

I had asked a question earlier about compressing the transaction hex as it was used in a project that involved sending text messages (160 characters limit per message): Compress transaction hex string So I have used a different approach and here’s the project details: https://github.com/prayank23/OfflineTx Converting transaction hex to words is working as expected. I […]

Categories
Bitcoin Cryptocurrency Mastering Development

Why does Bitcoincharts have inactive CSV data dumps in the non-inactive dir?

I discovered this goldmine of Bitcoin transaction data today, and have been coding all day to download them all and insert into my local database table: https://api.bitcoincharts.com/v1/csv/ However, something confuses me about this. As you can see, there is a sub-directory literally called "inactive_exchanges", leading me to assume that all the dead exchanges’ data is […]

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Bitcoin Cryptocurrency Mastering Development

What are fee_method and fee_level in Electrum’s getfeerate RPC call?

I couldn’t find any documentation on this. I found that the options for fee_method are eta, static and mempool by reading the source code. But it’s still not clear to me how fee_level relates to the fee_method, does it have something to do with configuration? If that’s the case, the configuration isn’t documented either. What […]

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Bitcoin Cryptocurrency Mastering Development

On my first shopping via bitcoin I get “The fee for this transaction seems unusually high. (20%)” What to do about it?

I have some bitcoins in a local Electrum wallet and wanted to do my first shopping with bitcoin from a shop offering payment via bitpay for an item costing (in USD) 20 dollar. So I went through the payment process with bitpay (Bitcoin amount is around 1.8 mBTC), disabled in Electrum as they had suggested […]

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Bitcoin Cryptocurrency Mastering Development

Combine multiple Bitcoin balances into a new wallet?

I need $1000 worth of Bitcoin, but I’m going to use an ATM, and without I.D., there is a limit of $250 per transaction. Could I conduct 4 separate transactions back-to-back, tell the ATM to create a different wallet each time, and then later move those 4 balances into one wallet?

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Bitcoin Cryptocurrency Mastering Development

Restoring bitcoin core wallet

I am trying to restore my bitcoin core wallet, but I only have the bitcoin private key and passphrase, I don’t have any wallet. dat file. I tried with importprivkey privatekey xxxxxxxxxxxxxxxxxxxx it is giving me Rescan is disabled when blocks are pruned ( code -4 ) Any help is appreciated. Thanks, Indian hodl

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Bitcoin Cryptocurrency Mastering Development

What would be the most reliable historical Bitcoin USD value data in JSON or CSV format? (Without any API/registration.)

As always, either there is zero data or there’s so much data that it’s impossible to know where to look or what to trust. I can easily find a trillion websites showing all kinds of Bitcoin value charts and stuff, but I can’t find a single one which actually provides this easily and neatly in […]