kharukaのブログ~お金と技術とキャリア~

Edu Fin~金融×教育~若いうちからお金について学ぶってだいじ!学んだテクノロジーはみんなの財産。過去、現在、将来の人生についてのブログ

はじめての Ethereum Part3 ether送金編(2019年2月16日執筆)

エンジニアスクールFLOC

▼前回の記事はこちらです。

はじめての Ethereum Part2 プライベートネットワークへの接続編(2019年2月16日執筆) - kharukaのブログ~お金と技術とキャリア~

環境情報

OS

OS バージョン 備考
macOS Mojava 10.14.2 ホストOS
Oracle VM VirtualBox 5.2.26
Ubuntu 16.04.4LTS ゲストOS

環境構築

▼環境構築の仕方はこちらなどをご参考に。

はじめてのCounterpartyノード構築Part1(2018年9月29日更新) - kharukaのブログ~お金と技術とキャリア~

ether送金

> personal.unlockAccount(eth.accounts[0])
Unlock account 0x38eb7eaed9dc2e29de9826a1284572ef1f07733b
Passphrase:
true

Passphraseが正しいとtrueが返ってきます。

アカウント"0x39068ec02085a3a9a97931ac8501a890b427f6bf"から

アカウント"0x33f463c3cd0c8c1121fc6465fc73d4aa593d1b04"へ

10ether送金してみましょう。

> eth.sendTransaction({from: eth.accounts[0], to: eth.accounts[1], value: web3.toWei(10, "ether")})
INFO [02-14|19:08:11.807] Setting new local account                address=0x39068ec02085A3A9a97931AC8501A890b427f6bf
INFO [02-14|19:08:11.807] Submitted transaction                    fullhash=0xaa4a10c6dc5173b7065e04c9ba483031de5afbca28b422ae48c153ed6da7d86e recipient=0x33f463c3cd0C8C1121fC6465fc73d4Aa593D1b04
"0xaa4a10c6dc5173b7065e04c9ba483031de5afbca28b422ae48c153ed6da7d86e"

アカウント"0x33f463c3cd0c8c1121fc6465fc73d4aa593d1b04"へ10ether送金されたことを確認しましょう。

> web3.fromWei(eth.getBalance(eth.accounts[1]), "ether")
10

gethの使い方(ヘルプ)

geth-linux-amd64-1.8.22-7fa3509e/geth -h
NAME:
   geth - the go-ethereum command line interface

   Copyright 2013-2018 The go-ethereum Authors

USAGE:
   geth [options] command [command options] [arguments...]

VERSION:
   1.8.22-stable-7fa3509e

COMMANDS:
   account           Manage accounts
   attach            Start an interactive JavaScript environment (connect to node)
   bug               opens a window to report a bug on the geth repo
   console           Start an interactive JavaScript environment
   copydb            Create a local chain from a target chaindata folder
   dump              Dump a specific block from storage
   dumpconfig        Show configuration values
   export            Export blockchain into file
   export-preimages  Export the preimage database into an RLP stream
   import            Import a blockchain file
   import-preimages  Import the preimage database from an RLP stream
   init              Bootstrap and initialize a new genesis block
   js                Execute the specified JavaScript files
   license           Display license information
   makecache         Generate ethash verification cache (for testing)
   makedag           Generate ethash mining DAG (for testing)
   monitor           Monitor and visualize node metrics
   removedb          Remove blockchain and state databases
   version           Print version numbers
   wallet            Manage Ethereum presale wallets
   help, h           Shows a list of commands or help for one command

ETHEREUM OPTIONS:
  --config value                      TOML configuration file
  --datadir "/home/ubuntu/.ethereum"  Data directory for the databases and keystore
  --keystore                          Directory for the keystore (default = inside the datadir)
  --nousb                             Disables monitoring for and managing USB hardware wallets
  --networkid value                   Network identifier (integer, 1=Frontier, 2=Morden (disused), 3=Ropsten, 4=Rinkeby) (default: 1)
  --testnet                           Ropsten network: pre-configured proof-of-work test network
  --rinkeby                           Rinkeby network: pre-configured proof-of-authority test network
  --syncmode "fast"                   Blockchain sync mode ("fast", "full", or "light")
  --gcmode value                      Blockchain garbage collection mode ("full", "archive") (default: "full")
  --ethstats value                    Reporting URL of a ethstats service (nodename:secret@host:port)
  --identity value                    Custom node name
  --lightserv value                   Maximum percentage of time allowed for serving LES requests (0-90) (default: 0)
  --lightpeers value                  Maximum number of LES client peers (default: 100)
  --lightkdf                          Reduce key-derivation RAM & CPU usage at some expense of KDF strength
  --whitelist value                   Comma separated block number-to-hash mappings to enforce (<number>=<hash>)

DEVELOPER CHAIN OPTIONS:
  --dev               Ephemeral proof-of-authority network with a pre-funded developer account, mining enabled
  --dev.period value  Block period to use in developer mode (0 = mine only if transaction pending) (default: 0)

ETHASH OPTIONS:
  --ethash.cachedir                       Directory to store the ethash verification caches (default = inside the datadir)
  --ethash.cachesinmem value              Number of recent ethash caches to keep in memory (16MB each) (default: 2)
  --ethash.cachesondisk value             Number of recent ethash caches to keep on disk (16MB each) (default: 3)
  --ethash.dagdir "/home/ubuntu/.ethash"  Directory to store the ethash mining DAGs (default = inside home folder)
  --ethash.dagsinmem value                Number of recent ethash mining DAGs to keep in memory (1+GB each) (default: 1)
  --ethash.dagsondisk value               Number of recent ethash mining DAGs to keep on disk (1+GB each) (default: 2)

TRANSACTION POOL OPTIONS:
  --txpool.locals value        Comma separated accounts to treat as locals (no flush, priority inclusion)
  --txpool.nolocals            Disables price exemptions for locally submitted transactions
  --txpool.journal value       Disk journal for local transaction to survive node restarts (default: "transactions.rlp")
  --txpool.rejournal value     Time interval to regenerate the local transaction journal (default: 1h0m0s)
  --txpool.pricelimit value    Minimum gas price limit to enforce for acceptance into the pool (default: 1)
  --txpool.pricebump value     Price bump percentage to replace an already existing transaction (default: 10)
  --txpool.accountslots value  Minimum number of executable transaction slots guaranteed per account (default: 16)
  --txpool.globalslots value   Maximum number of executable transaction slots for all accounts (default: 4096)
  --txpool.accountqueue value  Maximum number of non-executable transaction slots permitted per account (default: 64)
  --txpool.globalqueue value   Maximum number of non-executable transaction slots for all accounts (default: 1024)
  --txpool.lifetime value      Maximum amount of time non-executable transaction are queued (default: 3h0m0s)

PERFORMANCE TUNING OPTIONS:
  --cache value            Megabytes of memory allocated to internal caching (default: 1024)
  --cache.database value   Percentage of cache memory allowance to use for database io (default: 50)
  --cache.trie value       Percentage of cache memory allowance to use for trie caching (default: 25)
  --cache.gc value         Percentage of cache memory allowance to use for trie pruning (default: 25)
  --trie-cache-gens value  Number of trie node generations to keep in memory (default: 120)

ACCOUNT OPTIONS:
  --unlock value    Comma separated list of accounts to unlock
  --password value  Password file to use for non-interactive password input

API AND CONSOLE OPTIONS:
  --rpc                  Enable the HTTP-RPC server
  --rpcaddr value        HTTP-RPC server listening interface (default: "localhost")
  --rpcport value        HTTP-RPC server listening port (default: 8545)
  --rpcapi value         API's offered over the HTTP-RPC interface
  --ws                   Enable the WS-RPC server
  --wsaddr value         WS-RPC server listening interface (default: "localhost")
  --wsport value         WS-RPC server listening port (default: 8546)
  --wsapi value          API's offered over the WS-RPC interface
  --wsorigins value      Origins from which to accept websockets requests
  --ipcdisable           Disable the IPC-RPC server
  --ipcpath              Filename for IPC socket/pipe within the datadir (explicit paths escape it)
  --rpccorsdomain value  Comma separated list of domains from which to accept cross origin requests (browser enforced)
  --rpcvhosts value      Comma separated list of virtual hostnames from which to accept requests (server enforced). Accepts '*' wildcard. (default: "localhost")
  --jspath loadScript    JavaScript root path for loadScript (default: ".")
  --exec value           Execute JavaScript statement
  --preload value        Comma separated list of JavaScript files to preload into the console

NETWORKING OPTIONS:
  --bootnodes value     Comma separated enode URLs for P2P discovery bootstrap (set v4+v5 instead for light servers)
  --bootnodesv4 value   Comma separated enode URLs for P2P v4 discovery bootstrap (light server, full nodes)
  --bootnodesv5 value   Comma separated enode URLs for P2P v5 discovery bootstrap (light server, light nodes)
  --port value          Network listening port (default: 30303)
  --maxpeers value      Maximum number of network peers (network disabled if set to 0) (default: 25)
  --maxpendpeers value  Maximum number of pending connection attempts (defaults used if set to 0) (default: 0)
  --nat value           NAT port mapping mechanism (any|none|upnp|pmp|extip:<IP>) (default: "any")
  --nodiscover          Disables the peer discovery mechanism (manual peer addition)
  --v5disc              Enables the experimental RLPx V5 (Topic Discovery) mechanism
  --netrestrict value   Restricts network communication to the given IP networks (CIDR masks)
  --nodekey value       P2P node key file
  --nodekeyhex value    P2P node key as hex (for testing)

MINER OPTIONS:
  --mine                         Enable mining
  --miner.threads value          Number of CPU threads to use for mining (default: 0)
  --miner.notify value           Comma separated HTTP URL list to notify of new work packages
  --miner.gasprice "1000000000"  Minimum gas price for mining a transaction
  --miner.gastarget value        Target gas floor for mined blocks (default: 8000000)
  --miner.gaslimit value         Target gas ceiling for mined blocks (default: 8000000)
  --miner.etherbase value        Public address for block mining rewards (default = first account) (default: "0")
  --miner.extradata value        Block extra data set by the miner (default = client version)
  --miner.recommit value         Time interval to recreate the block being mined (default: 3s)
  --miner.noverify               Disable remote sealing verification

GAS PRICE ORACLE OPTIONS:
  --gpoblocks value      Number of recent blocks to check for gas prices (default: 20)
  --gpopercentile value  Suggested gas price is the given percentile of a set of recent transaction gas prices (default: 60)

VIRTUAL MACHINE OPTIONS:
  --vmdebug         Record information useful for VM and contract debugging
  --vm.evm value    External EVM configuration (default = built-in interpreter)
  --vm.ewasm value  External ewasm configuration (default = built-in interpreter)

LOGGING AND DEBUGGING OPTIONS:
  --fakepow                 Disables proof-of-work verification
  --nocompaction            Disables db compaction after import
  --verbosity value         Logging verbosity: 0=silent, 1=error, 2=warn, 3=info, 4=debug, 5=detail (default: 3)
  --vmodule value           Per-module verbosity: comma-separated list of <pattern>=<level> (e.g. eth/*=5,p2p=4)
  --backtrace value         Request a stack trace at a specific logging statement (e.g. "block.go:271")
  --debug                   Prepends log messages with call-site location (file and line number)
  --pprof                   Enable the pprof HTTP server
  --pprofaddr value         pprof HTTP server listening interface (default: "127.0.0.1")
  --pprofport value         pprof HTTP server listening port (default: 6060)
  --memprofilerate value    Turn on memory profiling with the given rate (default: 524288)
  --blockprofilerate value  Turn on block profiling with the given rate (default: 0)
  --cpuprofile value        Write CPU profile to the given file
  --trace value             Write execution trace to the given file

METRICS AND STATS OPTIONS:
  --metrics                          Enable metrics collection and reporting
  --metrics.influxdb                 Enable metrics export/push to an external InfluxDB database
  --metrics.influxdb.endpoint value  InfluxDB API endpoint to report metrics to (default: "http://localhost:8086")
  --metrics.influxdb.database value  InfluxDB database name to push reported metrics to (default: "geth")
  --metrics.influxdb.username value  Username to authorize access to the database (default: "test")
  --metrics.influxdb.password value  Password to authorize access to the database (default: "test")
  --metrics.influxdb.host.tag host   InfluxDB host tag attached to all measurements (default: "localhost")

WHISPER (EXPERIMENTAL) OPTIONS:
  --shh                       Enable Whisper
  --shh.maxmessagesize value  Max message size accepted (default: 1048576)
  --shh.pow value             Minimum POW accepted (default: 0.2)
  --shh.restrict-light        Restrict connection between two whisper light clients

DEPRECATED OPTIONS:
  --minerthreads value     Number of CPU threads to use for mining (deprecated, use --miner.threads) (default: 0)
  --targetgaslimit value   Target gas floor for mined blocks (deprecated, use --miner.gastarget) (default: 8000000)
  --gasprice "1000000000"  Minimum gas price for mining a transaction (deprecated, use --miner.gasprice)
  --etherbase value        Public address for block mining rewards (default = first account, deprecated, use --miner.etherbase) (default: "0")
  --extradata value        Block extra data set by the miner (default = client version, deprecated, use --miner.extradata)

MISC OPTIONS:
  --override.constantinople value  Manually specify constantinople fork-block, overriding the bundled setting (default: 0)
  --help, -h                       show help


COPYRIGHT:
   Copyright 2013-2018 The go-ethereum Authors

▼記事の続きは以下へ。

執筆中です。

参考

ビットコインとブロックチェーン

ビットコインとブロックチェーン