Query Truflation NFT and CPI data by following one of the guides below, based on your use case.

See our Youtube demonstration to see how to run through these tutorials.

The demonstration smart contracts provide a simple interface to retrieve the current year-on-year truflation index for US CPI . Please contact truflation for additional data which we have available on the blockchain.

These contracts have not been audited and are should be used at your own risk. Values that are available through testnets include a random fuzz and should be used for testing only.

To test out the truflation API, go to [[http:https://marketplace.truflation.com/]]

1. Get some LINK from ChainLink's faucet (make sure to choose "Arbitrum Goerli")
2. Open Truflation in Remix IDE
3. navigate to "Solidity Compiler" from the side menu and click on "Compile TruflationTester.sol"
4. navigate to "deploy & run transactions" from the side menu, set the "environment" to "Injected Web3", and log into your Metamask if necessary.
5. set the "contract" field to TruflationTester
6. Insert the oracle id, job id, and fee (wei) from the list of available networks. The fee should be 50000000000000 (5 * 10**17 wei). Get a token address from the list of chainlink tokens.

For Arbitrum testnet the parameters are:

• oracleid: 0x2118c39C092183F9140A339ADB2c3890644b00A2
• jobid: d220e5e687884462909a03021385b7ae
• fee: 500000000000000000
• token: 0xf97f4df75117a78c1A5a0DBb814Af92458539FB4

For Arbitrum mainnet the parameters are:

• oracleid: 0xF0ffC609da91d1931314BA5d17F1786db985D801
• jobid: a3fa982792ad486785be5d89ac333ab5
• fee: 500000000000000000
• token: 0xd14838A68E8AFBAdE5efb411d5871ea0011AFd28

7. press "deploy" and sign with Metamask, wait for the transaction to be confirmed
8. when confirmed, your deployed contract will be visible in "deployed contracts" below the "deploy" button that you just pressed
9. press the "copy" icon to the right of your contract name (shown as something like "TRUFLATIONTESTER AT 0x000..0000 (BLOCKCHAIN)") to get your contract's address
10. send some Goerli (or relevant network) LINK directly to your smart contract's address via Metamask or other wallet (0.5 LINK per call - ** if you have a transaction revert issue this means that you did not send the LINK **
11. Click on the down arrow to open up the interface to the deployed contracts
12. press the orange requestYoYInflation button to fetch inflation data from Chainlink and store the result in your contract
13. when confirmed, press the blue yoyInflation button to see the result

The deployed contract will return the yoyInflation value as a string. If you need the result as a uint256 wei value, please uncomment the parts of the smart contract that convert the response of the truflation server into a integer.

If you wish to have your contract runnable via ethereum use solt to generate a json file and upload this file to the verify and publish contracts feature of etherscan.

• Recipes

To use commodities data use the following parameters as examples

data: {"ids": 603}

or

data: {"ids": 603, "date": "2023-01-01"}

where ids are available from Commodities id list

• NFT Data Queries

Advanced users may want to use our hardhat units tests in the test directory and the functions in TfiExample.sol.

Additional code for our contracts is available in tfi-marketplace

This environment contains additional contracts and frameworks for testing web3 infrastructure using our Web3 api.

More data is available via Truflation Marketplace

A sample web3 frontend using truflation data is available in the sample-frontend repo.

Adapters and node toml files to implement the API are available on github

• Advanced users
• Truflation discord developer chat
• Network endpoints
• Using solt to get a contract on etherscan