Cryptocoins


Bitcoin (Wikipedia)

Bitcoin Core (Wikipedia)
Bitcoin Core official site
Bitcoin Core (Download)


Bitcoin-dev mailing list

Bitcoin Forum (Bitcointalk)
Bitcoin Forum (Bitcointalk) Development & Technical Discussion

Bitcoin at Reddit


Bitcoin original paper from Satoshi Nakamoto:
Bitcoin: A Peer-to-Peer Electronic Cash System

Bitcoin transations are hashed in a Merkle tree:
Merkle tree - Wikipedia

Bitcoin scalability (Paper):
http://fc16.ifca.ai/bitcoin/papers/CDE+16.pdf


Format of a transaction:
https://en.bitcoin.it/wiki/Transaction


Excelent articles about bitcoin protocol:
Bitcoin mining the hard way: the algorithms, protocols, and bytes
Bitcoins the hard way: Using the raw Bitcoin protocol


Secure you wallet



Proof of Work vs Proof of Stake


Nothing is Cheaper than Proof of Work

On Stake and Consensus (Andrew Poelstra)



Statistics


Statistics about Cryptocurrencies

Top 100 Richest Bitcoin Addresses and Bitcoin Distribution



IRC Channels


#bitcoin, #bitcoin-core-dev and #bitcoin-wizards at irc.freenode.net


Channel logs:

https://botbot.me/freenode/bitcoin-core-dev/

https://botbot.me/freenode/bitcoin-wizards/



Fee estimation


https://estimatefee.com/

https://bitcoinfees.21.co/



Other


How to run a Bitcoin node in Debian

How to encrypt and decrypt your Bitcoin wallet

How to build BitcoinCore from sources in Debian



Sidechains paper:
https://blockstream.com/sidechains.pdf


Software related to Bitcoin:
https://en.bitcoin.it/wiki/Software


Resources for Lightning Network developers:
http://dev.lightning.community/resources/