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Devnet
CAUTION this page is for building and running the latest development version of the chain for testing purpose only. Please note that is under active development and is highly unstable and subject to breaking changes. You should expect a moderate amount of troubleshooting work is required.
For anyone interested in joining the Cronos testnet, please refer to our public testnet documentation which will be released shortly.
By following this tutorial, you can compile and run the latest development version of Cronos testnet from scratch. It is intended for testing purpose only.
The first option is to use pystarport, a dedicated script similar to cosmos starport, but without the scaffolding feature to build a local development network with multiple validators. Another option is to use a shell script
init.sh to build a local development network with a single validator.- Python > 3.7.3
To install pystarport, run:
$ git clone https://github.com/crypto-org-chain/cronos.git
$ cd cronos
$ pip3 install pystarport
Install the binded version, which install cronosd together, and find it by the absolute path:
git clone https://github.com/crypto-org-chain/cronos
cd cronos
make install
Afterward, you can verify that by
$ cronosd -h
and also you can check the version of the cronosd to see if it is built with the later commit:
$ cronosd version
[version-g<commit_hash>]
Note: You can skip this section and start a local devnet without customization.
You can customize your devnet based on
cronos/scripts/cronos-devnet.yaml, for example: cronos_777-1: # change the chain-id
json-rpc:
address: "0.0.0.0:8545" # change the JSON-RPC address and port
ws-address: "0.0.0.0:8546" # change the JSON-RPC websocket address and port
api: "eth,net,web3,debug"
.......
accounts:
- name: community
coins: 10000000000000000000000basetcro
mnemonic: ${COMMUNITY_MNEMONIC}
- name: signer1
coins: 20000000000000000000000basetcro
mnemonic: ${SIGNER1_MNEMONIC}
- name: signer2
coins: 30000000000000000000000basetcro
mnemonic: ${SIGNER2_MNEMONIC}
The default configuration will give us two devnet validators with the chain-id
cronos_777-1; three accounts community, signer1 and signer2 with some allocated funds at the genesis.### customize the name of your key, the chain-id and moniker of the node ###
KEY="mykey"
CHAINID="cronos_777-1"
MONIKER="localtestnet"
.......
### specify the default keyring back-backend to be 'test' for convenience ###
cronosd config keyring-backend test
cronosd config chain-id $CHAINID
.......
# Allocate genesis accounts (cosmos formatted addresses)
cronosd add-genesis-account $KEY 100000000000000000000000000aphoton --keyring-backend test
# Sign genesis transaction
cronosd gentx $KEY 1000000000000000000000aphoton --keyring-backend test --chain-id $CHAINID
The default configuration will give us a single validator devnet with the chain-id
cronos_777-1; one account under the name of mykey with some allocated funds at the genesis.Once we finish with the configuration, we are ready to start the chain: in the repository root directory, run
$ pystarport serve --config ./scripts/cronos-devnet.yaml
Afterwards, keys will be generated according to the configuration specified, the accounts' information is generated in
data/cronos_777-1/accounts.json, for example:[
{"name": "validator", "type": "local", "address": "crc12luku6uxehhak02py4rcz65zu0swh7wjsrw0pp", "pubkey": "{\"@type\":\"/ethermint.crypto.v1.ethsecp256k1.PubKey\",\"key\":\"Am5xCmKjQt4O1NfEUy3Ly7r78ZZS7WeyN++rcOiyB++s\"}"},
{"name": "validator", "type": "local", "address": "crc18z6q38mhvtsvyr5mak8fj8s8g4gw7kjjtsgrn7", "pubkey": "{\"@type\":\"/ethermint.crypto.v1.ethsecp256k1.PubKey\",\"key\":\"AkJ4WnUHRFLWKmrCInD/uPsByTddC6coh66ADcYZMV0b\"}"},
{"name": "community", "type": "local", "address": "crc1czp5lh3ke85rruvg0vawec02perp2ul678x46r", "pubkey": "{\"@type\":\"/ethermint.crypto.v1.ethsecp256k1.PubKey\",\"key\":\"ApQozcgkbLxyWF5VYXBG7EY+R9p0IcyqngqaOz7FPJib\"}", "mnemonic": "figure outdoor option kitten force avocado hair rug shoulder win engage coconut record lounge insane royal crime powder dwarf monster car thing bench bamboo"},
{"name": "signer1", "type": "local", "address": "crc1gt7cfua508jfexuf9ea4536sdqkv62dsxxalc2", "pubkey": "{\"@type\":\"/ethermint.crypto.v1.ethsecp256k1.PubKey\",\"key\":\"A/93qfsXgEexTmtrkcq+LtFfclUU3FjyJuOVeCR+qi/1\"}", "mnemonic": "pencil shrug wire extra bonus deny ride trap science clarify lonely profit rural quote hamster fuel pig speak total lumber bench canyon possible execute"},
{"name": "signer2", "type": "local", "address": "crc1drs00mg2wfn26vtgsfqreq0m3jcfqf564gwkkk", "pubkey": "{\"@type\":\"/ethermint.crypto.v1.ethsecp256k1.PubKey\",\"key\":\"AkcixU8yAi547Oe9lUUMaQU4baQGCZU5ju2YeIZdaSOD\"}", "mnemonic": "cruel install century disease tired glass lesson mushroom donor usual uncover fly post stamp busy utility certain obscure whisper scene order want sentence reduce"}
]
Kindly save these mnemonics for key recovery later.
Blocks are now being generated! You can view the blockchain data by the rpc port of the
awesome0 (first node): http://localhost:26657/. Furthermore, you can also use the swagger doc of awesome0 at http://localhost:26654/swagger/.It is worth mentioning that the
serve command would truncate all the blocks previously generated and regenerate a new genesis block, which means you'll also lose all of your transaction records. If you wish to restart the chain with the existing blocks, please run pystarport with start command:$ pystarport start --config ./scripts/cronos-devnet.yaml
After the chain has been started, we may open up another terminal and start interacting with the chain by
cronosd.For Pystarport:
As in the last section, pre-created Hierarchical Deterministic (HD) mnemonic with genesis funds inside are prepared for you in the Devnet. To gain access to the funds, kindly restore the key by using the mnemonic before moving on to the next step.
Note: The keys are stored in your operating system by default, we will use
--keyring-backend test for simplicity. You may refer to a more detailed explanation here.- Firstly, restore the key name as
signer2:
$ cronosd keys add signer2 --recover --keyring-backend test
Fill in your bip39 mnemonic, as can be found in
data/cronos_777-1/accounts.json. Note that these addresses and mnemonic phrases are different for everyone.Enter your bip39 mnemonic
cruel install century disease tired glass lesson mushroom donor usual uncover fly post stamp busy utility certain obscure whisper scene order want sentence reduce
- name: signer2
type: local
address: crc1drs00mg2wfn26vtgsfqreq0m3jcfqf564gwkkk
pubkey: '{"@type":"/ethermint.crypto.v1alpha1.ethsecp256k1.PubKey","key":"A9J4ELPAqyyrmypT9CtOVyWrO66eEXum3d8Z2mV7MS6O"}'
mnemonic: ""
You can, for example, check the account balance by
cronosd q bank balances crc1drs00mg2wfn26vtgsfqreq0m3jcfqf564gwkkk -o json | jq
For example:
{
"balances": [
{
"denom": "basetcro",
"amount": "30000000000000000000000"
}
],
"pagination": {
"next_key": null,
"total": "0"
}
}
We can see that there is
30000000000000000000000 basetcro in this address.- We are now ready to transfer token between different addresses; we can create another address with the key name
Bob:$ cronosd keys add Bob --keyring-backend testwhich gives, for example:
- name: Bob
type: local
address: crc1vqgk86fzr64xsyeemlxnxxeawcw0zfcx3dwgjt
pubkey: '{"@type":"/ethermint.crypto.v1.ethsecp256k1.PubKey","key":"AsR5N3GJpk6TiN4EDYv7SsW/eKPvaLBkiEh/FFwcNvUoG"}'
mnemonic: ""
threshold: 0
pubkeys: []
- Now we can transfer tokens to
Bob, for example you can send1basetcroto Bob's address by
$ cronosd tx bank send signer1 crc1vqgk86fzr64xsyeemlxnxxeawcw0zfcx3dwgjt 1basetcro --keyring-backend test --chain-id cronos_777-1
- Lastly, check balance of Bob's address:$ cronosd query bank balances crc1vqgk86fzr64xsyeemlxnxxeawcw0zfcx3dwgjtand we can see that 1
basetcrohas already been transferred:balances:- amount: "1"denom: basetcropagination:next_key: nulltotal: "0"
Congratulations! You've successfully transferred tokens to Bob.
Firstly, we can check the details of the current validator set by the query command of cronosd, for example:
$ cronosd query staking validators -o json | jq
will result in
{
"validators": [
{
"operator_address": "ethvaloper1a303tt49l5uhe87yaneyggly83g7e4unxlc59p",
"consensus_pubkey": {
"@type": "/cosmos.crypto.ed25519.PubKey",
"key": "T3srVdJb8CXku5GobwHHt37t2iGQ+mRL/bEHK8Zlusw="
},
"jailed": false,
"status": "BOND_STATUS_BONDED",
"tokens": "1000000000000000000000",
"delegator_shares": "1000000000000000000000.000000000000000000",
"description": {
"moniker": "localtestnet",
"identity": "",
"website": "",
"security_contact": "",
"details": ""
},
"unbonding_height": "0",
"unbonding_time": "1970-01-01T00:00:00Z",
"commission": {
"commission_rates": {
"rate": "0.100000000000000000",
"max_rate": "0.200000000000000000",
"max_change_rate": "0.010000000000000000"
},
"update_time": "2021-07-06T16:15:07.061973Z"
},
"min_self_delegation": "1"
}
],
"pagination": {
"next_key": null,
"total": "0"
}
}
then we can see that there are two active validator
localtestnet at the moment.For the validator, we can see that it comes with an address and a public key:
"operator_address"- The operator address, which is used for identifying the operators of validators;"consensus_pubkey"- The consensus public key, which is used for identifying the validator nodes participating in consensus.
Last modified 1yr ago