Bitcore – A pure JavaScript Bitcoin API (opens in new tab)

Since you'd be the most likely person to know here, what javascript VM's will give you known-secure PRNG's, and which won't?

I think that's a pretty important thing to clarify if you're creating/signing transactions via JS.

Look into Coinbase's tip service: https://www.coinbase.com/tip

As well as ChangeTip: https://www.changetip.com/

It might be what you're looking for, unless you want to custom build something. In that case also give Chain.com a look as well as Blockcypher.com.

Coinbase also has some nice developer products, their api: coinbase.com/docs/api/overview

and if you want to do anything relating to raw bitcoin data (the blockchain and all transactions) i.e., run a node, I'd recommend Toshi.io, an open-source node that is very easy to query. Quite a few people run this thing on an AWS tier.

Hope that helps if you want to dabble with a bitcoin project for your site :)

Coinbase has easy integration of that does it not?

Yep, storing your bitcoins in a plain web app is definitely a bad idea. The current trend in the bitcoin space is a mixture of:

* Discouraging the use of the webapp (if any available) in favor of a browser application (chrome app, firefox app, etc)

* 2 factor auth to login

* Bitcoin "multisig" transactions: require at least N out of M valid private keys (allowing the storage of these keys to be on different devices/services/media) before releasing funds

And of course encryption before storage.

You're right – Bitcore is a library that exposes a simple API; we've changed the text on bitcore.io to reflect this. Thanks for the feedback!

All libraries expose an API, which is its set of public functions.

Huh?

This is clearly not the place to ask this question about mining. This is a thread about a software development on a whole different side of Bitcoin. If you are genuinely curious about the theme of your question, and not just interested in derailing threads, you are very welcome to educate yourself at bitcointalk, the main Bitcoin forum. There have been thousands -if not millions- of man hours in thinking, development, research and debate about the topics you enquire about. Head there and find the answers, and if still in doubt don't be afraid to ask (on an appropriate thread).

>If so, what happens when mining reaches the point where it becomes economically worthless to everyone except a few electricity thieves?

The difficulty of mining is represented by a certain target number. The process of mining involves finding another number (the nonce) such that the hash of the transactions and that nonce together is less than the target. The smaller the target is, the less possible solutions exist, and the more nonces you'd have to guess before you find one that satisfies the condition.

This difficulty is self-adjusting based on how long it took to find the previous 2016 blocks (at an average of 1 block every 10 minutes this is 2 weeks). If the previous 2016 blocks were found faster than an average of 1 every 10 minutes, then the difficulty will be increased so that the next 2016 go closer to 1 every 10 minutes, and vice versa. (There is a clamp on the change of 25% if I remember correctly, so it won't change drastically.)

The assumption in the end is that these few electricity thieves will not have so much hashpower that they will be able to drive up the difficulty so high the rest of the non-thieves can get profits from their miners.

Transaction Fees: http://bitcoinfees.com/

> The fees go to the miners to incentivise them to keep mining, which in turn keeps the Bitcoin network secure. They already get a reward of 25 XBT for each block they mine, but this reward halves every 4 years. The plan is that as the block reward diminishes over the time, it will be replaced by transaction fees.