# Citations
The following list is composed of the sources we used to build this
chapter. We deem these sources credible. Reference style is APA.
* Antonopoulos, A. M. (2014). Mastering Bitcoin: Unlocking Digital Cryptocurrencies (1st ed.). O’Reilly Media.
* Antonopoulos, A. M., & Wood, G. (2018). Mastering Ethereum (1st ed.). Van Duuren Media.
* Denis, V. (2020, April 2). The different types of Blockchain. CIA NEWS. Retrieved January 11, 2022, from https://cia.news/en/the-different-types-of-blockchain/
* E. (2021a, July 4). An Introduction to Decentralized Staking Pools Tokenomics. Blox Staking. Retrieved January 11, 2022, from https://www.bloxstaking.com/blog/ethereum-2-0/an-introduction-to-decentralized-staking-pools/
* P2Pool - Bitcoin Wiki. (n.d.). Bitcoin Wiki. Retrieved January 11, 2022, from https://en.bitcoin.it/wiki/P2Pool
* Marshall, A. (2019, January 28). Proof-of-work (PoW). All about cryptocurrency - BitcoinWiki. Bitcoin Wiki. Retrieved January 11, 2022, from https://en.bitcoinwiki.org/wiki/Proof-of-work
* ethos.dev. (2020, June 16). The Beacon Chain Ethereum 2.0 explainer you need to read first. Retrieved January 11, 2022, from https://ethos.dev/beacon-chain/
* Centieiro, H. (2022, January 6). Proof of Stake — What is and how does it work? - Nerd For Tech. Medium. Retrieved January 11, 2022, from https://medium.com/nerd-for-tech/proof-of-stake-what-is-and-how-does-it-work-1c8bd7f00303#:%7E:text=In%20proof%20of%20stake%2C%20block,block%20and%20win%20then%20reward.
* Salman, T., Zolanvari, M., Erbad, A., & Samaka, M. (2020, November 9). Security Services Using Blockchains: A State of the Art Survey. ResearchGate. Retrieved January 11, 2022, from https://www.researchgate.net/figure/Blockchain-network-database-blocks-and-transactions_fig1_326888946
* Andersson, H. (2021, July 13). Forking Explained. Apollo Capital. Retrieved January 11, 2022, from https://www.apollocap.io/2021/07/forking-explained/s