Old link change and optimization (#502)

* fix links: report-vulnerability.mdx

fix old links

* Update info and links: diffs-ethereum-base.mdx

Change to up-to-date info and links

* Update diffs-ethereum-base.mdx

* Update setup-with-base.mdx

Author: magellanvxa

docs/base-chain/network-information/diffs-ethereum-base.mdx

@@ -3,14 +3,15 @@ title: "Differences between Ethereum and Base"
 sidebarTitle: 'Differences: Ethereum & Base'
 ---
 
-Base is built on the [Bedrock](https://stack.optimism.io/docs/releases/bedrock/explainer/) release of the [OP Stack](https://stack.optimism.io/), which is designed from the ground up to be as close to Ethereum as possible. Because of this, there are very few differences when it comes to building on Base and Ethereum.
+Base is built on the [Bedrock](https://docs.optimism.io/stack/getting-started#the-op-stack-today) release of the [OP Stack](https://docs.optimism.io/), which is designed from the ground up to be as close to Ethereum as possible. Because of this, there are very few differences when it comes to building on Base and Ethereum.
 
 However, there are still some minor discrepancies between the behavior of Base and Ethereum that you should be aware of when building apps on top of Base.
 
 These minor differences include:
 
 - [Flashblocks](https://docs.base.org/base-chain/flashblocks/apps)
-- [Opcodes](https://stack.optimism.io/docs/releases/bedrock/differences/#opcode-differences)
-- [Blocks](https://stack.optimism.io/docs/releases/bedrock/differences/#blocks)
-- [Network specifications](https://stack.optimism.io/docs/releases/bedrock/differences/#network-specifications)
-- [Transaction costs](https://stack.optimism.io/docs/releases/bedrock/differences/#transaction-costs)
+- [Bridging](https://docs.optimism.io/stack/differences#bridging)
+- [Opcodes](https://docs.optimism.io/stack/differences#opcodes)
+- [Address aliasing](https://docs.optimism.io/stack/differences#address-aliasing)
+- [Transaction costs](https://docs.optimism.io/stack/differences#transaction-fees)
+- [Chain Finality](https://docs.optimism.io/stack/differences#chain-finality)

docs/base-chain/security/report-vulnerability.mdx

@@ -13,8 +13,8 @@ The HackerOne platform allows us to have a centralized and single reporting sour
 In line with our strategy of being the safest way for users to access crypto:
 
 - Coinbase will be extending our [best-in-industry](https://www.coinbase.com/blog/celebrating-10-years-of-our-bug-bounty-program) million-dollar [HackerOne bug bounty program](https://hackerone.com/coinbase?type=team) to cover the Base network, the Base bridge contracts, and Base infrastructure.
-- Coinbase will be working in tandem with OP Labs to harden the security guarantees of Bedrock and accelerate the timeline for decentralized fault-proofs on the [OP Stack](https://stack.optimism.io/).
-- Coinbase's bug bounty program will run alongside Optimism's existing [Immunefi Bedrock bounty program](https://immunefi.com/bounty/optimism/) to support the open source [Bedrock](https://stack.optimism.io/docs/releases/bedrock/) OP Stack framework.
+- Coinbase will be working in tandem with OP Labs to harden the security guarantees of Bedrock and accelerate the timeline for decentralized fault-proofs on the [OP Stack](https://docs.optimism.io/).
+- Coinbase's bug bounty program will run alongside Optimism's existing [Immunefi Bedrock bounty program](https://immunefi.com/bounty/optimism/) to support the open source [Bedrock](https://docs.optimism.io/stack/getting-started) OP Stack framework.
 
 For more information on reporting vulnerabilities and our HackerOne bug bounty program, view our [security program policies](https://hackerone.com/coinbase?view_policy=true).
 

docs/learn/foundry/setup-with-base.mdx

@@ -142,7 +142,7 @@ In this tutorial, you've embarked on the journey of smart contract development w
 [anvil]: https://book.getfoundry.sh/anvil/
 [forge]: https://book.getfoundry.sh/forge/
 [Git submodules]: https://git-scm.com/book/en/v2/Git-Tools-Submodules
-[OP Stack]: https://stack.optimism.io/
+[OP Stack]: https://docs.optimism.io/
 [Differences between Ethereum and Base]: https://docs.base.org/differences/
 [Basescan]: https://basescan.org/