List of cryptocurrencies with an original codebase:
Bitcoin (BTC)
Ripple (XRP)
Cardano (ADA)
Neo (NEO)
IOTA (MIOTA)
Nano (NANO)
Ethereum Classic (ETC)
NEM (XEM)
ICON (ICX)
Nxt (NXT)
BitShares (BTS)
Bytecoin (BCN)
Nebulas (NAS)
Xtrabytes (XBY)
Tezos (XTZ)
Siacoin (SC)
MaidSafeCoin (MAID)
Skycoin (SKY)
Bismuth (BIS)
LoMoCoin (LMC)
RChain (RHOC)
Quantum Resistant Ledger (QRL)
Waves (WAVES)
Nimiq Exchange Token (NET)
Dagger (XDAG)
Lamden (TAU)
Bytom (BTM)
Nuls (NULS)
Pascal Coin (PASC)
Elastic (XEL)
Arionum (ARO)
Heat (HEAT)
Ethereum (ETH)*
Digibyte (DGB)*
Stellar Lumens (XLM)*
Decred (DCR)*
Monero (XMR)*
Ark (ARK)*
Oyster Pearl (PRL)*
References:
What altcoins have original codebases?
http://mapofcoins.com/
*(hybrid)
What I mean by original codebase is “built from scratch?!” Please suggest corrections or additional cryptocurrencies in the comments. The Reddit post is here.