EOS系统自带合约

一、EOSIO Token 合约
此合约允许创建许多不同的token，这些token全部在同一合同上运行，但可能由不同的用户管理。
（1）创建一个账户用于部署合约

$ cleos create account eosio eosio.token \
        EOS7ijWCBmoXBi3CgtK7DJxentZZeTkeUnaSDvyro9dq7Sd1C3dC4 \
        EOS7ijWCBmoXBi3CgtK7DJxentZZeTkeUnaSDvyro9dq7Sd1C3dC4

（2）部署合约：${EOSIO_SOURCE}/build/contracts/eosio.token

$ cleos set contract eosio.token build/contracts/eosio.token -p eosio.token@active
Reading WAST...
Assembling WASM...
Publishing contract...
executed transaction: 528bdbce1181dc

二、eosio.msig合约
The eosio.msig contract allows multiple parties to sign a single transaction asynchronously. EOSIO has multi-signature (multisig) support at a base level, but it requires a synchronous side channel where data is ferried around and signed. Eosio.msig is a more user friendly way of asynchronously proposing, approving and eventually publishing a transaction with multiple parties’ consent.
三、eosio.system合约
其他生产者节点对当前主节点的chain_id的签名，签名15个后可以上链。
system contract

cleos sign --chain-id d0242fb30b71b82df9966d10ff6d09e4f5eb6be7ba85fd78f796937f1959315e upgrade_system_contract_trx.json | tail -n 5
private key:   "signatures": [
    "SIG_K1_JzABB9gzDGwUHaRmox68UNcfxMVwMnEXqqS1MvtsyUX8KGTbsZ5aZQZjHD5vREQa5BkZ7ft8CceLBLAj8eZ5erZb9cHuy5"
  ],
  $ cat upgrade_system_contract_official_trx_signed.json | tail -n 20
  "transaction_extensions": [],
  "signatures": [
   "SIG_K1_JzABB9gzDGwUHaRmox68UNcfxMVwMnEXqqS1MvtsyUX8KGTbsZ5aZQZjHD5vREQa5BkZ7ft8CceLBLAj8eZ5erZb9cHuy5",
   "SIG_K1_Kj7XJxnPQSxEXZhMA8uK3Q1zAxp7AExzsRd7Xaa7ywcE4iUrhbVA3B6GWre5Ctgikb4q4CeU6Bvv5qmh9uJjqKEbbjd3sX",
   "SIG_K1_KbE7qyz3A9LoQPYWzo4e6kg5ZVojQVAkDKuufUN2EwVUqtFhtjmGoC6QPQqLi8J7ftiysBp52wJBPjtNQUfZiGpGMsnZ1f",
   "SIG_K1_KdQsE7ahHA9swE9SDGg4oF6XahpgHmZfEgQAy9KPBLd9HuwrF6c8m6jz43zizK2oo32Ejg1DYuMfoEvJgVfXo81jsqTHvA",
   "SIG_K1_K6228Hi2z1WabgVdf5bk2UdKyyDSVFwkMaagTn9oLVDV8rCX7aQcjY94c39ah2CkLTsTEqzTPAYknJ8m2m9B7npPkHaFzc",
   "SIG_K1_Jzdx75hBCA2WSaXgrupmrNbcQocUCsP8r1BKkPXMreiAKPZDwX9J3G8fS1HhyqWjc7FbukwZf8sVRdS3wKbJVpytqXe7Nn",
   "SIG_K1_KW7Qu2SdPD3zuQKh2ziFLzn9QbKqeMpeiemULky5Bbg1Mst6ijbCX3k2AVFGNFLkNLA36PM1WAT5oipzu1B1K7ymRxTx1Z",
   "SIG_K1_KXJf1KZNpz73YFKKE7u6jFgsQ8XcX3yA7rDX6ZmG1Qfnc9FLLmT1WViv4bwcPbxaEYfR6SNWfk5cCR9eao2si1soqkXq92",
   "SIG_K1_JynjkHFT5UFGDpEcqdriXTzCGCwS36Xztq4UAWQHLQgRUZT2YFoLhUcc87kvUteqCUGVxsmSbfgWv1KLy24voKN4Qs5zTe",
   "SIG_K1_JxhfCaGBhuNShpDHn7j1CryG3iSebvfi7FUnJsfkXNTiwLyq2NDBkeakwjCMWFbzr6qqWuMDLjfXbzdtU17f1wCXMjKSgk",
   "SIG_K1_KcMSz89QG1ZRFNrXc69R63d5KXbJA8CBjNPYv1VEA3TRfjqVYuhyaHpGXQN4RSKDq4ygr3UTRYBQQVutkJnR6zZ4Ssgd7R",
   "SIG_K1_JuxT6bhUAbDs6Q2ppuKyKauduvbaJLxvh4gBH4e4A9yRhvUBT7w3DcvMyhdaor27Kbu29jnqhTbvXcb57QqKWQDpboLv7e",
   "SIG_K1_K8BuFYpCiC5FhpVK8ZAzc3VUg7vz6WwLoWBrGN6nnuqUjngGqvHp3UxDVzcwhqccHdv8kdPXvF6G1NszwF1dd3wjCrHBYw",
   "SIG_K1_KfH5ZirPwDk1RQKvJv2AGPfsJyPXvXLegZ7LvcPmRtjtMiErs1STXLNT8kiBfhZr4xkWRA5NR1kMF3d49DFMJiB2iWMXJc",
   "SIG_K1_KjJB8jtcqpVe3r5jouFiAa9wJeYqoLMh5xrUV6kBF6UWfbYjimMWBJWz2ZPomGDsk7JtdUESVrYj1AhYbdp3X48KLm5Cev"
  ],
  "context_free_data": []
}

“context_free_data”: []
四、eosio.bios合约
(1)To start additional nodes, you must first load the eosio.bios contract. This contract enables you to have direct control over the resource allocation of other accounts and to access other privileged API calls.
At this point, the second nodeos(inita) is an idle producer. To turn it into an active producer, inita needs to be registered as a producer with the bios node, and the bios node needs to perform an action to update the producer schedule.
(2) In a public blockchain, this contract will manage the staking and unstaking of tokens to reserve bandwidth for CPU and network activity, and memory for contracts.