Coinbase Suspends Canadian Dollar Services Amid $10.5M Raise From Bank of Tokyo-Mitsubishi UFJ (bitcoinmagazine.com)

San Francisco-based Coinbase, a leading Bitcoin exchange offering numerous services and products, has informed its Canadian users they must liquidate their CAD holdings by July 29th. “As of August 1, Coinbase’s Canadian payments provider, Vogogo, will be shutting down its payment processing business,” Coinbase…

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Created receiving address in Bitcoin Core but deleted it before receiving bitcoins

I created a receiving address in Bitcoin Core, sent myself some coins from localbitcoins.com and – silly me – deleted the receiving address from Bitcoin Core.

tradeblock.com shows the transaction with a “confirmed balance” but I haven’t received the coins in my wallet. Is there any way to restore the address in Bitcoin Core?

Thanks!

Recent Questions – Bitcoin Stack Exchange

Can the system of votes (of Stack Exchange) be considered as a blockchain?

When discussing with a friend about blockchain, he told me that he read an article about using blockchain in management: people can vote on somebody else’s work, so that he can gain reputations points, etc.

This made me think immediately of stack exchange, with its voting system. Then I found this: https://followmyvote.com/online-voting-technology/blockchain-technology/

It is possible to hack stack exchange et add manually reputation points? Is there anything to compare with blockchain technology?

Recent Questions – Bitcoin Stack Exchange

When we can agree on mempool sorting order, we can just confirm first n-transactions that are at least 10 mins old. What’s missing?

When we can agree on a mempool sorting order, we can just confirm first n-transactions (or 80% of transactions) that are at least 10 minutes old. Then, we can transfer (broadcast) the block header and a hash to the set of all confirmed transactions.

Just consider this as an aggressive version of BIP152, compact blocks.

This kind of method will work for transactions of any size; both confirming 10 transactions and 1 million transactions are the same.

What’s missing? Why are we not doing ‘confirmation’ like this?

For example, if we have 1000 transactions in a mempool (sorted), 900 transactions are at least 10 minutes old, and we’re confirming the first 720 transactions.

This may not be a perfect or complete solution, but we just need to find,

  1. Sort order; fee, size, etc.
  2. Transaction age; say, 10 min
  3. Confirm size; say, confirm first 80%

Note: Sort order is based on f(trxn-meta-data; fee, input, output, etc.), transaction age is used as a filter. Another filter is first x% of the set.

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Regrouping accounts belonging to same user

I am analysing some BTC transactions for academic purposes.

As part of that work, I would like to identify users with several accounts and regroup them under a single identifier.

I have assumed that when a transaction has several accounts paying in, it is likely that it is the same person using several accounts.

Is this assumption correct or could there be other reasons for having several accounts paying into the same transaction.

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How private key is generated?

I read here that:

If you could process one trillion private keys per second, it would take more than one million times the age of the universe to count them all. Even worse, just enumerating these keys would consume more than the total energy output of the sun for 32 years.

However this website http://directory.io says that they generated all private keys. Who is right? or what is it that I misunderstand ?

Recent Questions – Bitcoin Stack Exchange