Past, Present and Future

Road to Devcon 2.0 〜ETH1.x & ETH2.0 at Speee Lounge

Transcript

1. Past, Present and Future
 at Road to DEVCON #2
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2. 自己紹介 - About me
 @ DMM.com ・DMM.com Blockchain Programmer ・I Shibuya. Shinohara Wataru @shinanonozenji_ 2
3. 書籍紹介 - Publishing
 @ DMM.com 3
4. For a year
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5. For a year - 1年間を通して
 @ DMM.com • Universal Login • Wallet ◦ MetaMask Mobile ◦ Contract Wallet • Meta Transaction • Second Layer 5
6. Universal Login
 @ DMM.com • ERC1078を使用したUX改善 6 Universal Login 20181110 Hi-Con LT @toshiaki_takase https://docs.google.com/presentation/d/1JJxBcbMRelIstnz GKfWkb_lekWMRCqgRDYt6aHW-9HA/edit?usp=sharing
7. Decentralized Identity
 @ DMM.com • BYOID + eKYC (with uPort) • Decentralized Identity ION by Microsoft(on Bitcoin Blockchain) 7 これからの KYC と Identity on Blockchain の動向 @Naohiro Fujie https://www.slideshare.net/naohiro.fujie/kyc-identity-on-blo ckchain https://techcommunity.microsoft.com/t5/Azure-Active-Direct ory-Identity/Toward-scalable-decentralized-identifier-syste ms/ba-p/560168
8. Wallet
 @ DMM.com • MetaMask Mobile ◦ InstaPay(Payment Channel) ◦ Gasなしの即時送金が可能に 8
9. Wallet
 @ DMM.com • Contract Wallet ◦ Argent ◦ Gnosis Safe ◦ よりprogrammableなWalletが実現可能に ▪ Multi-Sig, Restore, Limitation of Amount ▪ その他サービスとの連携 9
10. Meta Transaction
 @ DMM.com • Contract Walletの根幹 • 署名とtx実行を分離する • GasはRelayerが支払い、検証をContractで行う 10 Signer Relayer off-chain on-chain Contract Verify Execute
11. Meta Transaction
 @ DMM.com • ERC865 - Pay transfers in tokens instead of gas, in one transaction • ERC877 - Separating transaction signer from transaction deployer • ERC1077 - Executable Signed Messages refunded by the contract • ERC-1776 - Native Meta Transactions • RelayerにIncentiveがあれば、front-runを止めることが可能かも 11
12. Second Layer
 @ DMM.com • Sharding -> Shasper • Plasma MVP, Cash, and more… • Parity Substrate 12
13. Sharding -> Shasper
 @ DMM.com • Shasper = Sharding + Casper • 去年発表したが、その2日前にVitalikが提唱 13 Sharding ビットコインとか勉強会 @wshino https://speakerdeck.com/wshino/sharding
14. Plasma
 @ DMM.com • 現実的なPlasmaが揃いつつある • ex. Omise GO, Loom, Cryptoeconomics Lab • 2017年の考案から実装フェーズまで進化 14
15. Parity Substrate
 @ DMM.com • ParitytechのBYOB(Build Your Own Blockchain) • モジュールで機能を拡張可能 • Beacon ChainやPlasmaの実装のベースに • 初回buildは遅いぞ 15
16. We did
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17. Quest - コミュニティの質を高めるQ&A
 @ DMM.com 17
18. Questの今後
 @ DMM.com • Road map ◦ Meta Transaction ◦ Based on Substrate ◦ Use Overlay Token 18
19. We do
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20. We do - 相互接続可能な価値を目指して
 @ DMM.com • Overlay Token ◦ interoperabilityのためのトークン ◦ 異なるブロックチェーンをまたぐことを前提 ◦ Substrate <-> Substrate ◦ Ethereum <-> Substrate 20 Overlay Token: A cross-chain token protocol for simple, better user experiences on multi-blockchain environments. https://github.com/dmm-bclabs/overlay-token
21. We do
 @ DMM.com 21
22. Improve develop environment
 @ DMM.com • now ◦ Remote-SSH + Docker compose • future ◦ + Telepresence or Skaffold 22
23. 総括 - Conclusion
 @ DMM.com • Continue to evolve UX. • Everything is programmable. • Sharding and Polkadot 23
24. Thank you for the attention.
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