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All Chains

Choose your
apprenticeship

6 blockchains. 90+ modules. Every chain gets the same pedagogical depth — failure-first learning, one real project, every error explained. The concepts differ. The quality doesn't.


Available Codexes

6 chains, each with its own lore

XRPL
FBA Consensus. Compliance-native DeFi.
15 modules · ~6 hours
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Algorand
Pure Proof-of-Stake. Instant finality.
16 modules · ~6 hours
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Ξ
Ethereum
The world's programmable blockchain.
16 modules · ~6 hours
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NEAR
Sharded for scale. Named for humans.
16 modules · ~6 hours
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Starknet
Zero-knowledge. Infinite scale.
16 modules · ~6 hours
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Hedera
Enterprise-grade. Predictable fees.
16 modules · ~6 hours
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Comparison

How the chains compare

Chain Consensus Language Native Token Unique Feature
XRPLFederated Byzantine AgreementJavaScript (xrpl.js)XRPProtocol-level compliance (Permissioned DEX)
AlgorandPure Proof-of-Stake (VRF)Python (PyTeal) / TEALALGOInstant finality, no forking
EthereumGasper (Casper FFG + LMD-GHOST)SolidityETHLargest ecosystem, EVM standard
NEARNightshade Sharding + DoomslugRust / AssemblyScriptNEARHuman-readable accounts, chain signatures
StarknetSTARK Validity RollupCairoSTRKNative account abstraction, ZK proofs
HederaHashgraph aBFTSolidity (HSCS) / SDKHBARUSD-denominated fees, governed council

Guidance

Which chain should I learn first?

01
I'm a Web2 developer, new to blockchain

Start with Ethereum. The largest ecosystem, the most jobs, and the most learning resources. Your Solidity lore transfers to every EVM chain.

02
I want to build enterprise applications

Start with Hedera or XRPL. Both offer predictable fees, governed networks, and compliance-native features built for institutions.

03
I'm interested in cutting-edge cryptography

Start with Starknet. STARK proofs, Cairo, and native account abstraction represent the frontier of blockchain technology.

04
I want the best developer experience

Start with NEAR. Human-readable accounts, Rust contracts, and chain abstraction make for the most developer-friendly experience in blockchain.


The lore of every chain
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