An Introduction to LINE Blockchain Platform

Transcript

1. None

2. Cashew (Testnet) Daphne (Mainnet) LINE Blockchain Developers BITMAX Wallet LINE

   Blockchain Explorer Your Game Your Travel Your Health Your Social LINE Blockchain LINE Blockchain Platform Your Blockchain Services Data pipeline LINE Blockchain Framework Query Transaction Keystore

3. Cashew (Testnet) Daphne (Mainnet) LINE Blockchain Developers BITMAX Wallet LINE

   Blockchain Explorer Your Game Your Travel Your Health Your Social LINE Blockchain LINE Blockchain Platform Your Blockchain Services Data pipeline LINE Blockchain Framework Query Transaction Keystore

4. Cashew (Testnet) Daphne (Mainnet) LINE Blockchain Developers BITMAX Wallet LINE

   Blockchain Explorer Your Game Your Travel Your Health Your Social LINE Blockchain LINE Blockchain Platform Your Blockchain Services Data pipeline LINE Blockchain Framework Query Transaction Keystore

5. Cashew (Testnet) Daphne (Mainnet) LINE Blockchain Developers BITMAX Wallet LINE

   Blockchain Explorer Your Game Your Travel Your Health Your Social LINE Blockchain LINE Blockchain Platform Your Blockchain Services Data pipeline LINE Blockchain Framework Query Transaction Keystore

6. Cashew (Testnet) Daphne (Mainnet) LINE Blockchain Developers BITMAX Wallet LINE

   Blockchain Explorer Your Game Your Travel Your Health Your Social LINE Blockchain LINE Blockchain Platform Your Blockchain Services Data pipeline LINE Blockchain Framework Query Transaction Keystore

7. Cashew (Testnet) Daphne (Mainnet) LINE Blockchain Developers BITMAX Wallet LINE

   Blockchain Explorer Your Game Your Travel Your Health Your Social LINE Blockchain LINE Blockchain Platform Your Blockchain Services Data pipeline LINE Blockchain Framework Query Transaction Keystore

8. Cashew (Testnet) Daphne (Mainnet) LINE Blockchain Developers BITMAX Wallet LINE

   Blockchain Explorer Your Game Your Travel Your Health Your Social LINE Blockchain LINE Blockchain Platform Your Blockchain Services Data pipeline LINE Blockchain Framework Query Transaction Keystore

9. BITMAX Wallet https://wallet.bitmax.me

10. Custodial wallet service for LINE users › LINE is responsible

    for storage of private keys › No chance to lose your private key › Designed for mass adoption › No need to install browser extensions or client apps › Grant transactions with a plain browser › via LINE message › via page redirect

11. BITMAX integration › BITMAX: LINE’s crypto asset trading service ›

    https://www.bitmax.me/ › BITMAX user → BITMAX Wallet user › But not vice versa › Shows balance of LINK(LN) in BITMAX › Redeem LINK Rewards to LINK › https://blockchain.line.me/linkrewards/ › LINK Reward : NFT on Daphne › LINK : LINE’s cryptocurrency on Bamboo › KYC is required on BITMAX

12. Features › LINE Login › Cashew / Daphne › Access

    your tokens › For all services › Service token, Item token › Send tokens to LINE friends › Do not write down wallet addresses › Even for non-BITMAX Wallet users

13. LINE Blockchain Developers https://blockchain.line.biz/

14. High-level API service for LINE Blockchain Console RESTful API Docs

15. High-level API service for LINE Blockchain Console RESTful API Docs

16. High-level API service for LINE Blockchain Console RESTful API Docs

17. API Key features Callback Item tokens Transactions Service wallets Users

    Service tokens

18. DEMO › LBCC (LINE Blockchain Coffee Coin) › Service token

    (Fungible) › Americano : 200 LBCC › LBCR (LINE Blockchain Coffee Reward) › Item token (Non-fungible) › Buy 1 Americano, Get 1 LBCR › 5 LBCR : 1 Americano https://github.com/behumble/line-blockchain-coffee
19. None

20. DEMO 02: Create a service & a service wallet

21. DEMO-04: Create a service token (LBCC)

22. DEMO: Create LBCR

23. DEMO: Find transactions with LBE

24. DEMO: Cashew only Add a test user

25. Run line-blockchain-coffee › https://github.com/behumble/line-blockchain-coffee › Written in JavaScript › https://nuxtjs.org/

    › https://vuetifyjs.com/ › LINE Login npm package › https://github.com/nkjm/line-login › Find User ID on login success › like U111ed5915b06ee098a24a725d02f5d40

26. DEMO: Environment variables

27. DEMO: Run server and set callback uri

28. DEMO: Send to a user from Console UI

29. Server-to-Server API Your Service LINE Blockchain Developers User Client-Server authentication

    (Cookie / Session) Server-Server authentication (API Key/Secret)

30. Signing API Requests https://docs-blockchain.line.biz/api-guide/Authentication normalize timestamp nonce API secret signature

    › Verify sender › Tamper-proof › Protect against replay attacks › Dev tips › Signing proxy server › https://github.com/behumble/lbp-signing-proxy › Sample snippets (Golang, JavaScript, C#) › Go : https://github.com/line/blockchain-sample-link-cinema/blob/bfe38337f941dee0b342fe865ac0e38ac297e962/api/api.go#L117 › JS : https://github.com/behumble/lbp-signing-proxy/blob/master/lbp.js#L4 › C# : https://github.com/line/blockchain-sample-mage-duel/blob/master/Server/TCGSampleServer/Service/TCGGameService/LBD/Util/Signature.cs#L124

31. DEMO: Using API with cURL

32. DEMO: Mint and balance in LBC

33. DEMO: Metamask

34. DEMO: LINE Blockchain Coffee

35. DEMO: What’s in the LBCR?

36. Item token image base URI ${BASE_IMAGE_URI}${TOKEN-ID} or ${BASE_IMAGE_URI}${TOKEN-TYPE}

37. Why LINE Blockchain Platform? Large User Base Ease of use

    LINK Rewards

38. Choose your plan

39. Thank you