OttoChain

OttoChain is a scalable PoS blockchain that is fully compatible and interoperable with the EVM. It is built using the Cosmos SDK which runs on top of the CometBFT consensus engine, to accomplish fast finality, high transaction throughput and short block times (~2 seconds).

Build & Run

make install

Run local single node

./tests/launch_devnet.sh

Run local multi-node

To build the docker image, run:

make build-image

TO start a testnet with 4 nodes using docker, run:

make localnet-start

Watch Logs

You can watch logs, run:

make localnet-show-logstream

You can also watch logs via Docker with the -f flag, for example:

docker logs -f validator01

Interact with the local multi-node network

You can send some curl commands such as:

curl -X POST --data '{"jsonrpc":"2.0","method":"eth_newBlockFilter","params":[],"id":1}' -H "Content-Type: application/json" http://127.0.0.1:8545

{"jsonrpc":"2.0","id":1,"result":"0x47fbaaa9287f72dbe2465469b4e71d5a"}

curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getFilterChanges","params":["0x47fbaaa9287f72dbe2465469b4e71d5a"],"id":1}' -H "Content-Type: application/json" http://127.0.0.1:8545

{"jsonrpc":"2.0","id":1,"result":["0x5c7be43735b901f41c9aa0c7340c99462f490104cfb8dc14d7fb0a33e15e46c2","0x7bb4eacdf8de04a86ec127b1a4417a38199094754a6e4560610ca2c11b1bfd57","0x1269fd687598334ae734bc24559b8e71dfc1525fdae86ceb3c439d2f4c2a7532","0x434b5ac65b607c8a910fc4f4d589818f4144bc64de638a82ceb24509ddfeac59","0xb26ef28098aa5cdaec6f58b267a8d2806770e46282131ff00b9f52d901c343e5","0xec87d067ea62730db4b0a2b3edcb462bad041c358971de3e5fd11c69761a2f9e","0x9c6f443ee54811d28cc1b903564f7fdbfd3372613cfbd55eddfc23a3205784df","0x83fe4eb6af26523f5675474053ae99d8369afed28bff7de6be727c8062ce53a3","0xdcc146c9d21a10b119397d98658c3d2bc4231c79cc3892d0070c0377308e9fdd","0x4a20b02aaa26846eecf646e606f39641acae52e4d66926dbc8585e406af50452","0x749ac740da8ea608eb293620a8a90b4c30a1fa7036975f07421c41b3cf0f48ca","0xdabcd4e8c672c3536e8cba7b480710a113de246ef679016033109bb1ca2bf405","0xd91373c0eea02653479c02e13d309441c0ff884a5e9b7a6ea0711a3e08c9ed59","0x7ac9e220458c3e7d273583505069385d8f0caf68763adb54744ea1ce449d0d24","0xad9de6812c8fcf292e14c0e4fe7099fdcb39677a9ff0df24862bf8a44b3812d5","0x3c491a7946d6b87e3bc69a7643e195795320e5bab3568bbfea444b93847081db","0x58d49ef24729a20f78047a6d230860ea427b58d300517368ab555db40b2c9309","0xbb24017c97487d554e82b876529c3fbf9e801eaf8105fe57b9414cb24b03fbb8"]}

OttoChain Testnet

• Chain Name: OttoChain
• Cosmos Chain ID: otto_9100-1
• EVM Chain ID (EIP155 Number): 9100
• JSON RPC: https://gateway.testnet.octopus.network/ottochain/m4k5urt9h33dpbhgsp4lqxemo6naeihz
• Explorer
• Faucet
• Genesis File: genesis.json
• Persistent Peers:

  persistent_peers = "[email protected]:26656, [email protected]:26656"

Tutorial

Hardhat Tutorial