diff --git a/package.json b/package.json
index 07965e5..8ed259c 100644
--- a/package.json
+++ b/package.json
@@ -31,6 +31,7 @@
     "dotenv": "^16.3.1",
     "ethers": "^6.9.0",
     "express": "^4.18.2",
+    "log4js": "^6.9.1",
     "node-cron": "^3.0.3",
     "redux": "^5.0.0"
   }
diff --git a/src/constants/coingecko.ts b/src/constants/coingecko.ts
index a410d36..e7c0df5 100644
--- a/src/constants/coingecko.ts
+++ b/src/constants/coingecko.ts
@@ -7,7 +7,7 @@ const chainlinkTickerToCoingeckoMap: {[symbol: string]: string} = {
   "ETH": "ethereum",
   "LINK": "chainlink",
   "SNX": "havven"
-}
+};
 
 export function getCoingeckoIdByChainlinkTicker(ticker: string) {
   return chainlinkTickerToCoingeckoMap[ticker];
diff --git a/src/index.ts b/src/index.ts
index 6ffa4ab..3069ff1 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,5 +1,6 @@
 import router from "./app";
 import { createServer, Server } from "http";
+import logger from "./utils/logger.util";
 
 const server: Server = createServer(router);
 
@@ -8,8 +9,8 @@ server.listen(router.get("port"), router.get("host"), async () => {
     process.exit();
   });
 
-  console.log(`Server started on ${router.get("host")}:${router.get("port")}`);
-  console.log("Press CTRL-C to stop\n");
+  logger.log(`Server started on ${router.get("host")}:${router.get("port")}`);
+  logger.log("Press CTRL-C to stop\n");
 });
 
 export default server;
\ No newline at end of file
diff --git a/src/jobs/app.jobs.ts b/src/jobs/app.jobs.ts
index 0a59a2d..2d26178 100644
--- a/src/jobs/app.jobs.ts
+++ b/src/jobs/app.jobs.ts
@@ -1,7 +1,9 @@
 import { initTickerState, setupTickerFetchingJob } from "./ticker.jobs";
-import {setupOffchainPriceFetchingJob} from "./price.jobs";
+import { setupOffchainPriceFetchingJob } from "./price.jobs";
+import logger from "../utils/logger.util";
 
 const initAppState = async () => {
+  logger.log("Initialising the app state");
   await initTickerState();
 };
 
@@ -9,5 +11,5 @@ export const initApp = async () => {
   await initAppState();
 
   await setupTickerFetchingJob();
-  await setupOffchainPriceFetchingJob()
+  await setupOffchainPriceFetchingJob();
 };
\ No newline at end of file
diff --git a/src/jobs/price.jobs.ts b/src/jobs/price.jobs.ts
index 41b2278..2c5baf9 100644
--- a/src/jobs/price.jobs.ts
+++ b/src/jobs/price.jobs.ts
@@ -1,24 +1,30 @@
 import CoinGeckoService from "../services/coingecko/coingecko.service";
 import CronService from "../services/cron.service";
 import store from "../redux/store";
-import {getCoingeckoIdByChainlinkTicker} from "../constants/coingecko";
-import {setCurrentOffchainPrice} from "../redux/prices/prices.redux.actions";
+import { getCoingeckoIdByChainlinkTicker } from "../constants/coingecko";
+import { setCurrentOffchainPrice } from "../redux/prices/prices.redux.actions";
+import OracleService from "../services/oracle/oracle.service";
 
 export const setupOffchainPriceFetchingJob = async () => {
   const coinGecko = new CoinGeckoService();
+  const oracleService = new OracleService();
 
   CronService.scheduleRecurringJob(async () => {
     const tickerSymbols = store.getState().tickers.symbols;
     const tickerCoinGeckoIds = tickerSymbols.map(getCoingeckoIdByChainlinkTicker);
 
     const offchainPrices = await coinGecko.getPrices(tickerCoinGeckoIds);
-    tickerCoinGeckoIds.forEach((id, index) => {
+    for (let index = 0; index < tickerSymbols.length; index++) {
+      const id = tickerCoinGeckoIds[index];
       const symbol = tickerSymbols[index];
       const currentPrice = offchainPrices[id]?.usd;
 
       if (currentPrice) {
         store.dispatch(setCurrentOffchainPrice(symbol, currentPrice));
       }
-    })
-  })
-}
\ No newline at end of file
+      try {
+        await oracleService.updateOnchainPrice(symbol, currentPrice);
+      } catch (err) { console.log(err);}
+    }
+  });
+};
\ No newline at end of file
diff --git a/src/jobs/ticker.jobs.ts b/src/jobs/ticker.jobs.ts
index 0983d23..793a89a 100644
--- a/src/jobs/ticker.jobs.ts
+++ b/src/jobs/ticker.jobs.ts
@@ -2,6 +2,7 @@ import TickersService from "../services/tickers/tickers.service";
 import store from "../redux/store";
 import { addTicker } from "../redux/tickers/tickers.redux.actions";
 import { TickerRegistryData } from "../services/tickers/tickers.service.types";
+import logger from "../utils/logger.util";
 
 const tickersService = new TickersService();
 
@@ -10,10 +11,17 @@ const updateReduxTickerState = (tickerData: TickerRegistryData) => {
 };
 
 export const initTickerState = async () => {
+  logger.log("Fetching all currently available tickers");
   const tickers = await tickersService.getAllTickers();
-  tickers.forEach(updateReduxTickerState);
+  const symbols: string[] = [];
+  tickers.forEach(tickerData => {
+    updateReduxTickerState(tickerData);
+    symbols.push(tickerData.tickerSymbol);
+  });
+  logger.log("Tickers found: ", symbols);
 };
 
 export const setupTickerFetchingJob = async () => {
+  logger.log("Setting up the Ticker Fetching observer");
   tickersService.listenForTickerUpdates(updateReduxTickerState).then();
 };
\ No newline at end of file
diff --git a/src/redux/prices/prices.redux.actions.ts b/src/redux/prices/prices.redux.actions.ts
index a9bf849..0149f0a 100644
--- a/src/redux/prices/prices.redux.actions.ts
+++ b/src/redux/prices/prices.redux.actions.ts
@@ -1,4 +1,4 @@
-import {EPricesReduxActions, SetCurrentOffchainPriceAction, SetCurrentOnchainPriceAction} from "./prices.redux.types";
+import { EPricesReduxActions, SetCurrentOffchainPriceAction, SetCurrentOnchainPriceAction } from "./prices.redux.types";
 
 export function setCurrentOnchainPrice(tickerSymbol: string, onchainPrice: number): SetCurrentOnchainPriceAction {
   return {
@@ -7,7 +7,7 @@ export function setCurrentOnchainPrice(tickerSymbol: string, onchainPrice: numbe
       tickerSymbol,
       onchainPrice
     }
-  }
+  };
 }
 
 export function setCurrentOffchainPrice(tickerSymbol: string, offchainPrice: number): SetCurrentOffchainPriceAction {
@@ -17,5 +17,5 @@ export function setCurrentOffchainPrice(tickerSymbol: string, offchainPrice: num
       tickerSymbol,
       offchainPrice
     }
-  }
+  };
 }
\ No newline at end of file
diff --git a/src/redux/prices/prices.redux.reducer.ts b/src/redux/prices/prices.redux.reducer.ts
index d88a8fe..41384e5 100644
--- a/src/redux/prices/prices.redux.reducer.ts
+++ b/src/redux/prices/prices.redux.reducer.ts
@@ -1,9 +1,9 @@
-import {EPricesReduxActions, PricesReduxActions, PricesReduxReducerState} from "./prices.redux.types";
-import {Reducer} from "redux";
+import { EPricesReduxActions, PricesReduxActions, PricesReduxReducerState } from "./prices.redux.types";
+import { Reducer } from "redux";
 
 const initialState: PricesReduxReducerState = {
   current: {}
-}
+};
 
 const pricesReduxReducer: Reducer<PricesReduxReducerState, PricesReduxActions> = (state = initialState, action) => {
   switch (action.type) {
@@ -19,7 +19,7 @@ const pricesReduxReducer: Reducer<PricesReduxReducerState, PricesReduxActions> =
             onchain: onchainPrice
           }
         }
-      }
+      };
     }
     case EPricesReduxActions.SET_CURRENT_OFFCHAIN_PRICE: {
       const { tickerSymbol, offchainPrice } = action.payload;
@@ -33,12 +33,12 @@ const pricesReduxReducer: Reducer<PricesReduxReducerState, PricesReduxActions> =
             offchain: offchainPrice
           }
         }
-      }
+      };
     }
     default: {
       return initialState;
     }
   }
-}
+};
 
 export default pricesReduxReducer;
\ No newline at end of file
diff --git a/src/redux/prices/prices.redux.types.ts b/src/redux/prices/prices.redux.types.ts
index 90729a1..e21a682 100644
--- a/src/redux/prices/prices.redux.types.ts
+++ b/src/redux/prices/prices.redux.types.ts
@@ -1,4 +1,4 @@
-import {ReduxAction} from "../redux.types";
+import { ReduxAction } from "../redux.types";
 
 export enum EPricesReduxActions {
   SET_CURRENT_ONCHAIN_PRICE = "SET_CURRENT_ONCHAIN_PRICE",
diff --git a/src/services/oracle/oracle.service.ts b/src/services/oracle/oracle.service.ts
new file mode 100644
index 0000000..654c272
--- /dev/null
+++ b/src/services/oracle/oracle.service.ts
@@ -0,0 +1,41 @@
+import Web3Service from "../web3.service";
+import { CONFIG } from "../../config";
+import logger from "../../utils/logger.util";
+
+class OracleService {
+  private _tickerPriceContract;
+
+  constructor() {
+    this._tickerPriceContract = Web3Service.getTickerPriceStorageContract(CONFIG.TICKER_PRICE_STORAGE, true);
+  }
+  
+  public async updateOnchainPrice(ticker: string, newPrice: number) {
+    const numberOfChainlinkDecimals = 8;
+    // @TODO Update to use BigInt
+    const parsedPrice = Math.trunc(newPrice * 10**numberOfChainlinkDecimals);
+    logger.log("Trying to update onchain price of ", ticker, " to ", newPrice);
+
+    const willRevert = await this.isPriceUpdateGoingToRevert(ticker, parsedPrice);
+
+    if(!willRevert) {
+      const tx = await this._tickerPriceContract.set(ticker, parsedPrice);
+      logger.info(`Transaction for updating ${ticker} to ${newPrice} sent, tx hash: ${tx.hash}`);
+      await tx.wait(1);
+      logger.info(`Transaction with tx hash: ${tx.hash} successful`);
+    } else {
+      logger.info(`Updating ticker ${ticker} to price ${newPrice} canceled`);
+    }
+  }
+
+  public async isPriceUpdateGoingToRevert(ticker: string, newPrice: number): Promise<boolean> {
+    try {
+      await this._tickerPriceContract.set.staticCall(ticker, newPrice);
+
+      return false;
+    } catch (err) {
+      return true;
+    }
+  }
+}
+
+export default OracleService;
\ No newline at end of file
diff --git a/src/services/prices/prices.service.ts b/src/services/prices/prices.service.ts
deleted file mode 100644
index 0ec61cb..0000000
--- a/src/services/prices/prices.service.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-class PricesService {
- 
-  public static updateOffchainPrices() {
-
-  }
-}
\ No newline at end of file
diff --git a/src/services/tickers/tickers.service.ts b/src/services/tickers/tickers.service.ts
index c498d6e..b590127 100644
--- a/src/services/tickers/tickers.service.ts
+++ b/src/services/tickers/tickers.service.ts
@@ -2,6 +2,7 @@ import Web3Service from "../web3.service";
 import { CONFIG } from "../../config";
 import { TypedEventLog } from "../../contracts/common";
 import { TickerRegistryData } from "./tickers.service.types";
+import logger from "../../utils/logger.util";
 
 class TickersService {
   private _registryContract;
@@ -21,6 +22,8 @@ class TickersService {
       }
 
       const parsedEvent = this.parseTickerFeedUpdatedEvent(data);
+      logger.log("New ticker found: ", parsedEvent);
+
       onTickerUpdate(parsedEvent);
     });
   }
diff --git a/src/services/web3.service.ts b/src/services/web3.service.ts
index 4606a65..2fca3bc 100644
--- a/src/services/web3.service.ts
+++ b/src/services/web3.service.ts
@@ -1,5 +1,5 @@
 import { ethers, JsonRpcProvider, Wallet } from "ethers";
-import { TickerUSDFeedRegistryAbi__factory } from "../contracts";
+import { TickerPriceStorageAbi__factory, TickerUSDFeedRegistryAbi__factory } from "../contracts";
 
 import { CONFIG } from "../config";
 
@@ -12,14 +12,16 @@ class Web3Service {
     this.signer = new ethers.Wallet(signerPrivateKey, this.provider);
   }
 
+  private _getRunner(isMutatingState: boolean) {
+    return isMutatingState ? this.signer : this.provider;
+  }
+
   public getTickerUSDFeedRegistryContract(address: string, isMutatingState?: boolean) {
-    const contract =  TickerUSDFeedRegistryAbi__factory.connect(address);
+    return TickerUSDFeedRegistryAbi__factory.connect(address, this._getRunner(!!isMutatingState));
+  }
 
-    if (isMutatingState) {
-      return contract.connect(this.signer);
-    } else {
-      return contract.connect(this.provider);
-    }
+  public getTickerPriceStorageContract(address: string, isMutatingState?: boolean) {
+    return TickerPriceStorageAbi__factory.connect(address, this._getRunner(!!isMutatingState));
   }
 }
 
diff --git a/src/utils/logger.util.ts b/src/utils/logger.util.ts
new file mode 100644
index 0000000..7cbf7df
--- /dev/null
+++ b/src/utils/logger.util.ts
@@ -0,0 +1,13 @@
+import * as log4js from "log4js";
+log4js.configure({
+  appenders: {
+    out: { type: "stdout" }
+  },
+  categories: {
+    default: { appenders: ["out"], level: "all" }
+  }
+});
+
+const logger = log4js.getLogger();
+
+export default logger;
\ No newline at end of file
diff --git a/yarn.lock b/yarn.lock
index 31ce278..8b55430 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -681,6 +681,11 @@ cross-spawn@^7.0.2:
     shebang-command "^2.0.0"
     which "^2.0.1"
 
+date-format@^4.0.14:
+  version "4.0.14"
+  resolved "https://registry.yarnpkg.com/date-format/-/date-format-4.0.14.tgz#7a8e584434fb169a521c8b7aa481f355810d9400"
+  integrity sha512-39BOQLs9ZjKh0/patS9nrT8wc3ioX3/eA/zgbKNopnF2wCqJEoxywwwElATYvRsXdnOxA/OQeQoFZ3rFjVajhg==
+
 debug@2.6.9:
   version "2.6.9"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
@@ -1007,7 +1012,7 @@ flat-cache@^3.0.4:
     keyv "^4.5.3"
     rimraf "^3.0.2"
 
-flatted@^3.2.9:
+flatted@^3.2.7, flatted@^3.2.9:
   version "3.2.9"
   resolved "https://registry.yarnpkg.com/flatted/-/flatted-3.2.9.tgz#7eb4c67ca1ba34232ca9d2d93e9886e611ad7daf"
   integrity sha512-36yxDn5H7OFZQla0/jFJmbIKTdZAQHngCedGxiMmpNfEZM0sdEeT+WczLQrjK6D7o2aiyLYDnkw0R3JK0Qv1RQ==
@@ -1045,6 +1050,15 @@ fs-extra@^7.0.0:
     jsonfile "^4.0.0"
     universalify "^0.1.0"
 
+fs-extra@^8.1.0:
+  version "8.1.0"
+  resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-8.1.0.tgz#49d43c45a88cd9677668cb7be1b46efdb8d2e1c0"
+  integrity sha512-yhlQgA6mnOJUKOsRUFsgJdQCvkKhcz8tlZG5HBQfReYZy46OwLcY+Zia0mtdHsOo9y/hP+CxMN0TU9QxoOtG4g==
+  dependencies:
+    graceful-fs "^4.2.0"
+    jsonfile "^4.0.0"
+    universalify "^0.1.0"
+
 fs.realpath@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
@@ -1134,7 +1148,7 @@ gopd@^1.0.1:
   dependencies:
     get-intrinsic "^1.1.3"
 
-graceful-fs@^4.1.2, graceful-fs@^4.1.6:
+graceful-fs@^4.1.2, graceful-fs@^4.1.6, graceful-fs@^4.2.0:
   version "4.2.11"
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.2.11.tgz#4183e4e8bf08bb6e05bbb2f7d2e0c8f712ca40e3"
   integrity sha512-RbJ5/jmFcNNCcDV5o9eTnBLJ/HszWV0P73bc+Ff4nS/rJj+YaS6IGyiOL0VoBYX+l1Wrl3k63h/KrH+nhJ0XvQ==
@@ -1342,6 +1356,17 @@ lodash@^4.17.15:
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
   integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
 
+log4js@^6.9.1:
+  version "6.9.1"
+  resolved "https://registry.yarnpkg.com/log4js/-/log4js-6.9.1.tgz#aba5a3ff4e7872ae34f8b4c533706753709e38b6"
+  integrity sha512-1somDdy9sChrr9/f4UlzhdaGfDR2c/SaD2a4T7qEkG4jTS57/B3qmnjLYePwQ8cqWnUHZI0iAKxMBpCZICiZ2g==
+  dependencies:
+    date-format "^4.0.14"
+    debug "^4.3.4"
+    flatted "^3.2.7"
+    rfdc "^1.3.0"
+    streamroller "^3.1.5"
+
 lru-cache@^6.0.0:
   version "6.0.0"
   resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-6.0.0.tgz#6d6fe6570ebd96aaf90fcad1dafa3b2566db3a94"
@@ -1660,6 +1685,11 @@ reusify@^1.0.4:
   resolved "https://registry.yarnpkg.com/reusify/-/reusify-1.0.4.tgz#90da382b1e126efc02146e90845a88db12925d76"
   integrity sha512-U9nH88a3fc/ekCF1l0/UP1IosiuIjyTh7hBvXVMHYgVcfGvt897Xguj2UOLDeI5BG2m7/uwyaLVT6fbtCwTyzw==
 
+rfdc@^1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/rfdc/-/rfdc-1.3.0.tgz#d0b7c441ab2720d05dc4cf26e01c89631d9da08b"
+  integrity sha512-V2hovdzFbOi77/WajaSMXk2OLm+xNIeQdMMuB7icj7bk6zi2F8GGAxigcnDFpJHbNyNcgyJDiP+8nOrY5cZGrA==
+
 rimraf@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-3.0.2.tgz#f1a5402ba6220ad52cc1282bac1ae3aa49fd061a"
@@ -1773,6 +1803,15 @@ statuses@2.0.1:
   resolved "https://registry.yarnpkg.com/statuses/-/statuses-2.0.1.tgz#55cb000ccf1d48728bd23c685a063998cf1a1b63"
   integrity sha512-RwNA9Z/7PrK06rYLIzFMlaF+l73iwpzsqRIFgbMLbTcLD6cOao82TaWefPXQvB2fOC4AjuYSEndS7N/mTCbkdQ==
 
+streamroller@^3.1.5:
+  version "3.1.5"
+  resolved "https://registry.yarnpkg.com/streamroller/-/streamroller-3.1.5.tgz#1263182329a45def1ffaef58d31b15d13d2ee7ff"
+  integrity sha512-KFxaM7XT+irxvdqSP1LGLgNWbYN7ay5owZ3r/8t77p+EtSUAfUgtl7be3xtqtOmGUl9K9YPO2ca8133RlTjvKw==
+  dependencies:
+    date-format "^4.0.14"
+    debug "^4.3.4"
+    fs-extra "^8.1.0"
+
 string-format@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/string-format/-/string-format-2.0.0.tgz#f2df2e7097440d3b65de31b6d40d54c96eaffb9b"