The current state of blockchains is that each economy is siloed within its own network. What happens to these economies once you introduce interoperability to these blockchains, opening up trade channels, and allowing each blockchain to specialize in a scalable way?

1. A Brief History
of
Distributed State
Ethan Buchman
Cosmos & Tendermint
Berlin

2. The Problem
Distributed State

3. Villages and City States

4. Villages and City States

5. My Computer and Intranet

6. Empires

7. Somebody Else’s Government

8. Somebody Else’s Computers

9. Sovereign Nations

10. GeoPolitical Sovereignty

11. Digital Network Sovereignty

12. Villages and City States

13. EcoVillage and Metropolis

14. Network of Community Currencies

15. Blockchain Applications

16. Somebody Else’s State Machine
- Zookeeper, etcd, consul
- Fancy key-value store
- Emphasis on distributed systems tasks (dynamic config, locking,
etc.)
- Bitcoin
- “Programmable money”
- “Functional programming” - no state (!), contracts renewed
every transaction
- Forth like, purposefully not Turing-complete
- Ethereum
- “Smart contracts”
- “Contract-oriented” - stateful contracts live independently on the
blockchain
- Turing complete (Ethereum Virtual Machine)

17. Application Blockchain Interface (ABCI)
State Machines
in
Any Programming Language

18. Application Blockchain Interface (ABCI)
SECURITY & NETWORKING
PLATFORMS
APPLICATION
PLATFORMS
SOCKET PROTOCOLSCGI ABCI
Tendermint

19. Application Blockchain Interface (ABCI)

20. ABCI Ecosystem

21. Cosmos SDK

22. Cosmos SDK
- Abstract away low-level ABCI concerns
- Golang
- Tiny language, static and interface types, high
performance, compiles everywhere, standardized
formatting, built-in testing, etc.
- Composable modules
- Capability-based security

23. Txs and Msgs

24. Txs and Msgs

25. Handlers and AnteHandler

26. Handlers, AnteHandler, Result

27. Capability-Based Store Access

28. Capability-Based Store Access

29. Simple Key-Value Store

30. Simple Key-Value Store

31. Mappers and Keepers

32. Mappers and Keepers

33. BeginBlock & EndBlock

34. Some Modules
Cosmos Hub:
- Delegated Proof-of-Stake
- Slashing
- Governance
- Coin transfers and issuance
- Fee distribution
- IBC
- Authentication
Ethermint:
- Same as Hub
- EVM
And much more!
https://github.com/cosmos/cosmos-sdk
https://github.com/cosmos/ethermint