# gethでのEthの発行をコントロールする


# サーバ構成

## クライアントウォレット

- 内部にLNノードを持つ
- Neutrino modeでBitcoinノードに接続する。

## バリデータノード

- 1つが止まっても、動き続けるようにバリデータノードは**3つ**で構成したい。
- それぞれ、別のアベイラビリティゾーンに分けて構築する
- ブートノードもそれぞれのサーバに配置しておく。
- gethの起動時に、rpcは必要なもののみ許可しておく。(clique等は含めない)
- それぞれEBS(500GB)をアタッチしておく。
- クライアントからバリデータノードへのRPCアクセスは、LBを介して行われる。
- (RPCリクエスト用のgethとバリデータノードは別に構築してもいいが、今のところ最小構成で作成する)
- バリデータノードのcliqueにアクセスできないようにし、他のノードがバリデータになれないようにする。
- ec2はt2.xlargeで構築する。

## LNノード

- LNノードへは、同一VPC内からのみ(AWS Lambda)アクセスできるように設定する。
- 内部にinvoice用のサブスクライバーを用意して、InvoiceがSettleになると、SQSにETH satoshi変換用のキューを流す。
- 十分にoutbound、inboundを持ったチャネルを作成しておく。
- torで外部サーバに(から)接続できるようにする。(ネットワークを安定させること。)

## Bitcoinノード

- それぞれEBS(1000GB)をアタッチしておく。
- クライアントウォレットからBitcoinノードに接続できるようにする。

## 踏み台サーバ

- LNノードおよびバリデータノードへは、踏み台サーバ経由でしかアクセスできない

## AWS Lambda

- API Gateway経由およびSQS経由でイベントが起動される。
- Eth Satoshiのトランザクションの送信は、system managerに登録したprivate keyで署名する。
- Create InvoceおよびEth Satoshiのトランザクション処理に使われる。

# genesisブロックの設定

- Sealer Nodesは2つ。
- Sealer Nodesに、バリデータノードを動かすアカウントをそれぞれ設定する。
- バリデータノードを動かすETHアカウントにそれぞれ、3000万枚入れる。

Consensus: POA
NetworkID: 2789 (https://chainlist.org/ にて存在しないのを確認。)
BlockTime: 5s

genesis.json example

300億枚配置

{
    "config": {
      "chainId": 2789,
      "homesteadBlock": 0,
      "eip150Block": 0,
      "eip150Hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
      "eip155Block": 0,
      "eip158Block": 0,
      "byzantiumBlock": 0,
      "constantinopleBlock": 0,
      "petersburgBlock": 0,
      "istanbulBlock": 0,
      "clique": {
        "period": 5,
        "epoch": 30000
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    "nonce": "0x0",
    "timestamp": "0x61d58473",
    "extraData": "0x000000000000000000000000000000000000000000000000000000000000000013632061de49bbfd8246cdef3ca9c180e47beb20ed87ee84804fccdd7d8ed29c3505be5afc802f420000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
    "gasLimit": "0x47b760",
    "difficulty": "0x1",
    "mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "coinbase": "0x0000000000000000000000000000000000000000",
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## トークンについて

https://hackmd.io/8C7M42UDSHiODvaodQ4sHA を参考にする。

Cold Wallet に300億枚を置いて、緊急補給用 wallet にそれぞれ1000万枚ずつ置いておく。オペレータは常に3000万枚保有していて枯渇したら月1程度のオペレーションで cold wallet から補給する。

オペレータの保有枚数の根拠は
TPS=1000,平均ガスコスト0.01枚としたときに100年使える。
0.01 * 1000 * (60 * 60 * 24 * 30 * 12 * 100) = 31,104,000,000 = about 300億枚

オペレータの持つ 3000万枚は一月で使う枚数

また、IFPO で配るのが実際に市場に流通する枚数で
万が一オペレータがGOXしても全体の1%に収まるように枚数調整。