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Bitcoin Cryptocurrency Mastering Development

Anyone knows those companies?

I would like to know if anyone is familiar with columncapitalinc.com or advancedmarket-terminal.com . Has anyone ever done business with them ? I would really appreciate any feedback

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Bitcoin Cryptocurrency Mastering Development

Transaction taking a long time to confirm, now it doesn’t even show up on Bitcoin Explorer

So, I’m trying to spend a small amount of bitcoin on a website (not relevant) and I send over 0.0010346 BTC with a fee of 0.0000543 BTC ( 30.2 sat/byte ) and it’s been almost 24 hours, and it still hasn’t confirmed. The website stated it saw my payment, and will convert my BTC into […]

Categories
Bitcoin Cryptocurrency Mastering Development

Transaction taking a long time to confirm, now it doesn’t even show up on Bitcoin Explorer

So, I’m trying to spend a small amount of bitcoin on a website (not relevant) and I send over 0.0010346 BTC with a fee of 0.0000543 BTC ( 30.2 sat/byte ) and it’s been almost 24 hours, and it still hasn’t confirmed. The website stated it saw my payment, and will convert my BTC into […]

Categories
Bitcoin Cryptocurrency Mastering Development

How can the segwit witness data can be “off-chain”? What does it really mean?

I have several questions regarding the segwit witness data. My current understanding is as follows. Before segwit, the witness data was part of the input that the user had to provide so that they could spend an UTXO. The witness data is the digital signature or any other solution that allows an UTXO to be […]

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Bitcoin Cryptocurrency Mastering Development

Can a single wallet generate (and use) both SegWit and non-SegWit addresses?

Is a Segwit wallet able to generate and use non-Segwit addresses? I’m using Bitpay’s Bitcore to create wallets and generate new addresses for the users of my platform. I’m also using Bitcore-wallet-client to sign transactions. My users have legacy wallets right now. I intend to migrate their wallets to native Segwit, but they will also […]

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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 […]

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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

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 […]