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‎src/content/quickstarts/transmitter.mdx‎

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@@ -5,7 +5,7 @@ githubSourceCodeUrl: "https://github.com/hackbg/chainlink-datastreams-transmitte
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image: "QuickStarts-DataStreams-Transmitter.webp"
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products: ["streams"]
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time: "25 minutes"
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requires: "Foundry, Docker, Node.js, pnpm, Redis, Wallet with ETH and LINK, Data Streams credentials."
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requires: "Foundry, Docker, Node.js, pnpm, Redis, Wallet with AVAX and LINK, Data Streams credentials."
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---
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import { Accordion, Address, Aside, ClickToZoom, CodeSample, CopyText } from "@components"
@@ -75,8 +75,8 @@ Before you start this tutorial, ensure you have the following prerequisites:
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- **Deployment Host**: A stable server environment (cloud or on-premise) is required for a production deployment of the Transmitter service. This guide uses your local machine for initial setup and testing.
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- **Software Dependencies**: [Foundry][FOUNDRY_INSTALL], [Docker][DOCKER_INSTALL], [Node.js][NODE_INSTALL], and [Redis][REDIS_INSTALL] installed on your deployment host. This guide uses `pnpm` for package management.
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- **Development Wallet**: This guide requires a funded development wallet and its **private key** to send transactions.
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- **Network Configuration**: This guide uses **Arbitrum Sepolia**. You can find RPC URLs on [Chainlist](https://chainlist.org).
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- **Testnet Funds**: The wallet must be funded with testnet `LINK` and `ETH` to pay for transaction fees on the **Arbitrum Sepolia** network. Both are available from the [Chainlink Faucet](https://faucets.chain.link/).
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- **Network Configuration**: This guide uses **Avalanche Fuji**. You can find RPC URLs on [Chainlist](https://chainlist.org).
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- **Testnet Funds**: The wallet must be funded with testnet `LINK` and `AVAX` to pay for transaction fees on the **Avalanche Fuji** network. Both are available from the [Chainlink Faucet](https://faucets.chain.link/).
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- **API Credentials**: Access to Data Streams requires API credentials. If you haven't already, [contact us][DATA_STREAMS_CONTACT] to request Data Streams access.
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- **Web3 Foundation**: A basic understanding of [smart contracts and blockchain development](/quickstarts/deploy-your-first-contract).
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@@ -107,7 +107,7 @@ First, deploy a `DataStreamsFeed.sol` contract. This contract receives and store
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```bash
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cat >.env <<EOF
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PRIVATE_KEY=0xYOUR_PRIVATE_KEY
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RPC_URL_ARBITRUM_SEPOLIA=https://sepolia-rollup.arbitrum.io/rpc
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RPC_URL_AVAX_FUJI=https://api.avax-test.network/ext/bc/C/rpc
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EOF
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```
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@@ -125,7 +125,7 @@ First, deploy a `DataStreamsFeed.sol` contract. This contract receives and store
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| Parameter | Value | Description |
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| :--------------- | :------------------------------------------------------------------- | :----------------------------------------- |
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| `verifierProxy_` | `0x2ff010DEbC1297f19579B4246cad07bd24F2488A` | Arbitrum Sepolia Verifier |
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| `verifierProxy_` | `0x2bf612C65f5a4d388E687948bb2CF842FFb8aBB3` | Avalanche Fuji Verifier |
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| `_feedId` | `0x000359843a543ee2fe414dc14c7e7920ef10f4372990b79d6361cdc0dd1ba782` | ETH/USD |
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| `_decimals` | `18` | The number of decimals for the data. |
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| `_description` | `"ETH / USD Feed"` | A human-readable description for the feed. |
@@ -138,10 +138,10 @@ First, deploy a `DataStreamsFeed.sol` contract. This contract receives and store
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<Fragment slot="panel.1">
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This is the simplest method. It deploys the contract and automatically grants the `ADMIN` and `REPORT_VERIFIER` roles to the deploying wallet address.
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Run the deployment script to deploy to **Arbitrum Sepolia**:
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Run the deployment script to deploy to **Avalanche Fuji**:
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```sh
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forge script script/DeployDataStreamsFeedWithRoleAssign.s.sol:DeployDataStreamsFeedWithRoleAssign \
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--rpc-url $RPC_URL_ARBITRUM_SEPOLIA \
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--rpc-url $RPC_URL_AVAX_FUJI \
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--private-key $PRIVATE_KEY \
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--broadcast
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```
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1. Run the deployment script:
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```sh
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forge script script/DeployDataStreamsFeed.s.sol:DeployDataStreamsFeed \
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--rpc-url $RPC_URL_ARBITRUM_SEPOLIA \
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--rpc-url $RPC_URL_AVAX_FUJI \
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--private-key $PRIVATE_KEY \
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--broadcast
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```
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ROLE=0xf9f8c20c4c3b902ac9f63b3ab127d0fa52ad9efa682a9cbbead7833d9777cd4e
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cast send $DEPLOYED_FEED_ADDRESS "grantRole(bytes32,address)" $ROLE $TRANSMITTER_WALLET_ADDRESS \
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--rpc-url $RPC_URL_ARBITRUM_SEPOLIA \
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--rpc-url $RPC_URL_AVAX_FUJI \
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--private-key $PRIVATE_KEY
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```
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1. (Optional) Verify your contract on Arbiscan:
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1. (Optional) Verify your contract on Snowtrace/Routescan:
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```sh
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forge verify-contract \
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--chain-id 421614 \
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--chain-id 43113 \
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--verifier etherscan \
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--verifier-url "https://api-sepolia.arbiscan.io/api" \
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--verifier-url "https://api.routescan.io/v2/network/testnet/evm/43113/etherscan/api" \
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<DEPLOYED_FEED_ADDRESS> \
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src/feed/DataStreamsFeed.sol:DataStreamsFeed \
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--flatten \
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--etherscan-api-key <YOUR_ARBISCAN_API_KEY>
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--etherscan-api-key <YOUR_API_KEY>
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```
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</Fragment>
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```bash
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cp config-chainlink-example.yml config.yml
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```
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1. Open `config.yml` in a text editor. Update the `targetChains` section to point to the contract you deployed on **Arbitrum Sepolia**.
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1. Open `config.yml` in a text editor. Update the `targetChains` section to point to the contract you deployed on **Avalanche Fuji**.
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```yaml
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# --- Feeds (off-chain subscriptions) ----------------------------
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feedId: "0x000359843a543ee2fe414dc14c7e7920ef10f4372990b79d6361cdc0dd1ba782"
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# --- Defaults ---------------------------------------------------
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chainId: 421614 # Default target chain is Arbitrum Sepolia
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chainId: 43113 # Default target chain is Avalanche Fuji
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gasCap: "150000"
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interval: "*/30 * * * * *" # Every 30 seconds
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priceDeltaPercentage: 0.01 # 0.01 %
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# --- RPC & Currency metadata -----------------------------------
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chains:
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# Arbitrum Sepolia
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- id: 421614
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name: "Arbitrum Sepolia"
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rpc: "https://sepolia-rollup.arbitrum.io/rpc"
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# Avalanche Fuji
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- id: 43113
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name: "Avalanche Fuji Network"
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rpc: "[https://api.avax-test.network/ext/bc/C/rpc](https://api.avax-test.network/ext/bc/C/rpc)"
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# ... other chain details
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# --- Data-Streams Verifier addresses ----------------------------
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verifierAddresses:
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- chainId: 421614 # Arbitrum Sepolia
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address: "0x2ff010DEbC1297f19579B4246cad07bd24F2488A"
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- chainId: 43113 # Avalanche Fuji
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address: "0x2bf612C65f5a4d388E687948bb2CF842FFb8aBB3"
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# --- Target contracts (on-chain writes) -------------------------
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targetChains:
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- chainId: 421614 # Arbitrum Sepolia
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- chainId: 43113 # Avalanche Fuji
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targetContracts:
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- feedId: "0x000359843a543ee2fe414dc14c7e7920ef10f4372990b79d6361cdc0dd1ba782"
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# PASTE YOUR DEPLOYED CONTRACT ADDRESS HERE
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address: "0xYOUR_ARBITRUM_SEPOLIA_CONTRACT_ADDRESS"
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address: "0xYOUR_AVALANCHE_FUJI_CONTRACT_ADDRESS"
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functionName: updateReport
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functionArgs: [reportVersion, verifiedReport]
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abi:
@@ -308,7 +308,7 @@ The optional sections below provide a detailed overview of the Transmitter UI, e
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<Accordion title="Chain" >
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On the upper-right corner of the page you will find the **Chain** section. Since the default chain is configured to `Arbitrum Sepolia`, you should see that network listed along with details for your wallet.
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On the upper-right corner of the page you will find the **Chain** section. Since the default chain is configured to `Avalanche Fuji`, you should see that network listed along with details for your wallet.
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| Field | Description |
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| :----------------------- | :----------------------------------------------------------------------------------- |
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| **Native Token Balance** | Your native token balance, which is used to pay for on-chain transaction fees (gas). |
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| **LINK Balance** | Your `LINK` token balance, used to pay for Chainlink Data Streams transactions. |
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Your balance should reflect the amount of testnet LINK and ETH you have in your wallet. If you need more, you can use the [Chainlink Faucet](https://faucets.chain.link/).
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Your balance should reflect the amount of testnet LINK and AVAX you have in your wallet. If you need more, you can use the [Chainlink Faucet](https://faucets.chain.link/).
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</Accordion>
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