Quickstart

This guide will help you explore the basics of interacting with the COTI network and executing transactions with encrypted inputs. To get started, choose your path (Solidity, TypeScript or Python) and follow the steps listed below.

Solidity

1. Clone the coti-contracts-examples repository\

   git clone https://github.com/coti-io/coti-contracts-examples.git

2. Navigate to the newly cloned repository directory\

   cd ./coti-contracts-examples

3. Install dependencies\

   npm install

4. Compile contracts\

   npx hardhat compile

5. Run the PrivateToken test script\

   npm run test-private-token

   Running this test will automatically create an account and a key/value pair with name: SIGNING_KEYS (visible in the .env file). The script will output something like this:\

   Private Token
       1) "before all" hook in "Private Token"
   
     0 passing (39ms)
     1 failing
   
     1) Confidential ERC20
          "before all" hook in "Private Token":
        Error: Created new random account 0x17EDB982c3569D29EbaF407F72aDD05722d5f179.
        Please use faucet to fund it.

   It is normal to encounter exception of: Error: Created new random account [...] Please use faucet to fund it. on the first run, This will be resolved once the account is funded.\

6. To fund the account, head to the faucet at https://faucet.coti.io to get Testnet funds. (use https://discord.coti.io to join COTI's Discord server) Send the following message to the faucet along with your newly created account, visible in the last part of the error above. format: testnet <account address> for example: testnet 0x17EDB982c3569D29EbaF407F72aDD05722d5f179 The bot will reply with the message: <username> faucet transferred 10 COTI (testnet)\

7. Run the PrivateToken test suite once more.\

   npm run test-private-token

8. The script output will look like this:\

   Private Token
   ************* Onboarding user  0x17EDB982c3569D29EbaF407F72aDD05722d5f179  *************
   ************* Onboarding user  0xe1E7315F6970F353661fc84FFd9238133cED3677  *************
   ************* Onboarded! created user key and saved into .env file *************
   ************* Onboarded! created user key and saved into .env file *************
       Deployment
         ✔ Deployed address should not be undefined
         ✔ Owner initial balance (123ms)
         ✔ Function 'name' should be correct (130ms)
         ✔ Function 'symbol' should be correct (123ms)
         ✔ Function 'decimals' should be correct (119ms)
         ✔ Function 'totalSupply' should be correct (117ms)
       Transfer 5
         ✔ Transfer - clear (9469ms)
         ✔ Transfer - Confidential (5260ms)
         ✔ TransferFrom - clear without giving allowance should fail (9905ms)
         ✔ TransferFrom - clear (9770ms)
         ✔ TransferFrom - Confidential (10265ms)
         ✔ Approve/Allowance - Confidential (10255ms)
   
     12 passing (1m)
   
   ✨  Done in 69.69s.

   Running the test suite does the following:

   • Deploys the PrivateToken contract: Sets up the token with specific details (name, symbol, initial supply).

   • Tests the deployment: Verifies the contract address, initial balance, and token details (name, symbol, decimals, total supply).

   • Tests transfers: Both clear and confidential transfers, including transferFrom functionality with and without prior allowance.

   • Tests approvals and allowances: Ensures that the contract correctly handles approvals and allowances, both clear and confidential.

9. You may also run specific tests:\

   npm run test-private-nft

   or\

   npm run test-private-token

   or\

   npm run test-private-auction

   or\

   npm run test-private-identity-registry

   or\

   npm run test-on-chain-database

TypeScript

1. Clone the coti-typescript-examples repository\

   git clone https://github.com/coti-io/coti-typescript-examples.git

2. Navigate to the coti-ethers examples subdirectory in the newly cloned repository directory\

   cd ./coti-typescript-examples/coti-ethers/server

3. Install dependencies\

   npm install

4. Run the PrivateToken example\

   npm run erc20

   Running this test will automatically create an account and a key/value pair with name: SIGNING_KEY (visible in the .env file). The script will output something like this:\

   provider: https://testnet.coti.io/rpc
   chainId: 7082400
   latest block: 1294746
   ************* Created new account  0x1Fc537B022ED68f1Be44d59e4382016d976B3389  and saved into .env file *************
   /Users/spencer/Desktop/COTI/coti-typescript-examples/coti-ethers/server/src/util/general-utils.ts:11
           throw new Error(`Please use faucet to fund account ${wallet.address}`)
                 ^
   Error: Please use faucet to fund account 0x1Fc537B022ED68f1Be44d59e4382016d976B3389

   It is normal to receive the exception Error: Please use faucet to fund account on the first run. This will be resolved once the account is funded.\

5. To fund the account, head to the faucet at https://faucet.coti.io to get Testnet funds. (use https://discord.coti.io to join COTI's Discord server) Send the following message to the faucet along with your newly created account, visible in the last part of the error above. format: testnet <account address> for example: testnet 0x87c13D0f5903a68bE8288E52b23A220CeC6b1aB6 The bot will reply with the message <username> faucet transferred 10 COTI (testnet)\

6. Run the PrivateToken script once more\

   npm run erc20

7. You may also run other scripts:\

   npm run nativeTransfer

   or\

   npm run dataOnChain

   or\

   npm run onChainDatabase

Python

1. Clone the coti-python-examples repository\

   git clone https://github.com/coti-io/coti-python-examples.git

2. Navigate to the coti-web3 examples subdirectory in the newly cloned repository directory\

   cd coti-python-examples/coti-web3

3. Install dependencies\

   python3 -m pip install -r requirements.txt

4. Set the python path as following\

   export PYTHONPATH=$PWD

5. Run the native_transfer.py script\

   python3 examples/native_transfer.py

   Running the script will automatically create an account and a key/value pair with name: ACCOUNT_PRIVATE_KEY (visible in the .env file). The script will output something like this:\

   So you dont have an account yet, dont worry... lets create one right now!
   Creation done!
   Traceback (most recent call last):
     File "/Users/user/projects/coti-python-examples/coti-web3/examples/native_transfer.py", line 45, in <module>
       main()
     File "/Users/user/projects/coti-python-examples/coti-web3/examples/native_transfer.py", line 33, in main
       validate_minimum_balance(web3, eoa.address)  # validate minimum balance
     File "/Users/user/projects/coti-python-examples/coti-web3/examples/utils.py", line 43, in validate_minimum_balance
       raise Exception(
   Exception: Not enough balance!, head to discord faucet and get some...https://faucet.coti.io, ask the BOT:testnet 0x78501a70CcADe055D0a1320d640395D505C8Fa97

   It is normal to receive the exception Not enough balance! on the first run. This will be resolved once the account is funded.\

6. To fund the account, head to the faucet at https://faucet.coti.io to get Testnet funds. (use https://discord.coti.io to join COTI's Discord server) Send the following message to the faucet along with your newly created account, visible in the last part of the error above. format: testnet <account address> for example: testnet 0x87c13D0f5903a68bE8288E52b23A220CeC6b1aB6 The bot will reply with the message <username> faucet transferred 10 COTI (testnet)\

7. Run the native_transfer.py script once more\

   python3 examples/native_transfer.py

   The script will output as following:\

   AttributeDict({'blockHash': HexBytes('0xa839081ee841355d2c52548f7fcabda9a665dffa779c87d71251a8b242e45e30'), 'blockNumber': 1294736, 'contractAddress': None, 'cumulativeGasUsed': 63000, 'effectiveGasPrice': 30000000000, 'from': '0x78501a70CcADe055D0a1320d640395D505C8Fa97', 'gasUsed': 21000, 'logs': [], 'logsBloom': HexBytes('0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'), 'status': 1, 'to': '0x9E4dC0B018200c56dB0d7d17d620F7B551919BdA', 'transactionHash': HexBytes('0xfe348567258fedd45f539218eb145c5b8bda0ef4bc1cf92bbf81363396086823'), 'transactionIndex': 2, 'type': 0})

8. Run the onboard_account.py script\

   python3 examples/onboard.py

9. You may also run other scripts:\

   python3 examples/confidential_erc20.py

   or\

   python3 examples/data_on_chain.py