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Bitcoin Cryptocurrency Development

Why does it make sense for mining pools to send empty blocks to miners in Stratum v1?

I am reading the recently released specs of Stratum v1 versus Stratum v2. One of the features is that “it is equally as efficient for pools to send full blocks for miners to begin working on as it is for them to send empty blocks “. I don’t understand why it is efficient for mining […]

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Bitcoin Cryptocurrency Development

Can a non-miner third party help other people’s transactions to confirm faster?

If I recall correctly, in 2017, when the mempool was full, there were some guys bumping other people sent transactions that were stuck in the mempool. Is that possible? How does that work?

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Bitcoin Cryptocurrency Development

are official bitcoin core released compiled with zmq in general?

I installed the binary and try to listen to ZeroMQ stream. But I got nothing out. Then I installed ZeroMQ but still got nothing. https://bitcoin.org/en/release/v0.17.1 so, are official bitcoin core releases compiled with zmq in general?

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Bitcoin Cryptocurrency Development

How to watch and use addresses generated from xpub

How to watch the addresses generated using xpub for incoming transactions? and Create transactions to send bitcoin to another address. var bitcore = require(‘bitcore-lib’); var Address = bitcore.Address; var PublicKey = bitcore.PublicKey; var Networks = bitcore.Networks; var xpub = ‘tpubDFaw2mL2nZuxk9WeCTr5Y74xytQLqtxSet3FYigfTMX788gjZmd4juFYeLDchGMaXmjGeoy6FrULbZd9D8iogcPZyBeYfT5MAyqnaL8bMQb’; var hdPublickey = new bitcore.HDPublicKey(xpub); var orderPublickey = hdPublickey.derive(“m/44/0/4/0/0”); var pubkey = new PublicKey(orderPublickey.publicKey); var […]

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Bitcoin Cryptocurrency Development

Mobile app for bitcoins?

Is there a mobile app that I can use to buy/sell bit coins? Would it be useful if I create one?

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Bitcoin Cryptocurrency Development

I have an incoming TX but getbalance says 0.0 even tho i have 0-conf

2.6.3 :122 > $bitcoin_rpc.getbalance => 0.0 2.6.3 :123 > $bitcoin_rpc.getbalance(“*”, 0) => 0.0 2.6.3 :124 > $bitcoin_rpc.listtransactions => [{“address”=>”bc1q9kvfyjxtk9tvkzgpkf4x8zs42sddwlyanz3z6z”, “category”=>”receive”, “amount”=>0.00025, “label”=>”myaddress”, “vout”=>1, “confirmations”=>0, “trusted”=>false, “txid”=>”ad922349668c17c3ab47081f6dbc6e7e8f68473840146bfdd18f35f7d0bca216”, “walletconflicts”=>[], “time”=>1574217056, “timereceived”=>1574217056, “bip125-replaceable”=>”yes”}] 2.6.3 :125 > Time.now.to_i => 1574217344 what’s the magic behind it? since confirmation=0 is default, i would expect 0.00025 as a return value

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Bitcoin Cryptocurrency Development

How can I upload a small (<100kb) file to Bitcoin SV scaling net?

I’ve seen that bitcoin sv has a scaling network, and I would like to upload with it. But, I’m not sure if the same tools are available to run on my computer. I have my node running and am mining. How can I use my BSV client to upload?

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Bitcoin Cryptocurrency Development

Bitcoin core wallet

My old computer was trash my new computer btc core wallet with my private keys and password I made my backup wallet locked I forgot my password how can I find my password please help

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Bitcoin Cryptocurrency Development

Bitcoin and encryption

To the best of my understanding Bitcoin uses encryption to create the digital signature, basically, by encrypting the hashed message (transaction?). Would like to get your expert opinion to my claim the encryption is used by the Bitcoin protocol/algorithm.

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Bitcoin Cryptocurrency Development

How much is 1 bitcoin worth in dollars?

What is say, 1 bitcoin equivalent to in American dollars?