feat: add withdraw to and update README.md

Author: JuArce

claim_contracts/base/Makefile

@@ -89,6 +89,18 @@ withdraw-base-to-l1-mainnet: ## Initiate ALIGN withdrawal from Base to Ethereum
 		$(L2_TOKEN_MAINNET) $(AMOUNT) 200000 0x \
 		--private-key $(USER_PRIVATE_KEY) --rpc-url $(BASE_MAINNET_RPC_URL)
 
+withdraw-base-to-l1-sepolia-to: ## Initiate ALIGN withdrawal from BaseSepolia to a different address on Sepolia (requires AMOUNT, TO)
+	cast send 0x4200000000000000000000000000000000000010 \
+		"withdrawTo(address,address,uint256,uint32,bytes)" \
+		$(L2_TOKEN_SEPOLIA) $(TO) $(AMOUNT) 200000 0x \
+		--private-key $(USER_PRIVATE_KEY) --rpc-url $(BASE_SEPOLIA_RPC_URL)
+
+withdraw-base-to-l1-mainnet-to: ## Initiate ALIGN withdrawal from Base to a different address on Ethereum (requires AMOUNT, TO)
+	cast send 0x4200000000000000000000000000000000000010 \
+		"withdrawTo(address,address,uint256,uint32,bytes)" \
+		$(L2_TOKEN_MAINNET) $(TO) $(AMOUNT) 200000 0x \
+		--private-key $(USER_PRIVATE_KEY) --rpc-url $(BASE_MAINNET_RPC_URL)
+
 # --- Prove & Finalize (requires npm install) ---
 
 prove-withdrawal-sepolia: ## Prove withdrawal on L1 Sepolia (requires TX_HASH)
@@ -102,9 +114,3 @@ finalize-withdrawal-sepolia: ## Finalize withdrawal on L1 Sepolia (requires TX_H
 
 finalize-withdrawal-mainnet: ## Finalize withdrawal on L1 Mainnet (requires TX_HASH)
 	npx tsx scripts/withdraw.ts finalize --tx-hash $(TX_HASH) --network mainnet
-
-withdraw-full-sepolia: ## Full withdrawal flow: prove + finalize on Sepolia (requires TX_HASH)
-	npx tsx scripts/withdraw.ts full --tx-hash $(TX_HASH) --network sepolia
-
-withdraw-full-mainnet: ## Full withdrawal flow: prove + finalize on Mainnet (requires TX_HASH)
-	npx tsx scripts/withdraw.ts full --tx-hash $(TX_HASH) --network mainnet

claim_contracts/base/README.md

@@ -26,7 +26,7 @@ make verify L2_TOKEN=<address> RPC_URL=https://sepolia.base.org
 
 ## Bridge (L1 -> Base)
 
-Approve + deposit in one command. `AMOUNT` is in wei (1e18 = 1 ALIGN).
+Approve + deposit in one command. `AMOUNT` is the token amount with 18 decimals (1000000000000000000 = 1 ALIGN).
 
 ```bash
 make bridge-l1-to-base-sepolia AMOUNT=1000000000000000000
@@ -35,6 +35,13 @@ make bridge-l1-to-base-mainnet AMOUNT=1000000000000000000
 
 Tokens appear on Base after ~20 minutes.
 
+To bridge to a different L2 address, use the `TO` parameter:
+
+```bash
+make bridge-l1-to-base-sepolia-to AMOUNT=1000000000000000000 TO=0x...
+make bridge-l1-to-base-mainnet-to AMOUNT=1000000000000000000 TO=0x...
+```
+
 ## Withdraw (Base -> L1)
 
 Withdrawals are a [multi-step process](https://docs.optimism.io/app-developers/tutorials/bridging/cross-dom-bridge-erc20#withdraw-tokens). No approval is needed. All three steps use the same `TX_HASH` — the **L2 initiation tx hash** from step 1.
@@ -46,6 +53,13 @@ Withdrawals are a [multi-step process](https://docs.optimism.io/app-developers/t
    make withdraw-base-to-l1-mainnet AMOUNT=1000000000000000000
    ```
 
+   To withdraw to a different L1 address, use the `TO` parameter:
+
+   ```bash
+   make withdraw-base-to-l1-sepolia-to AMOUNT=1000000000000000000 TO=0x...
+   make withdraw-base-to-l1-mainnet-to AMOUNT=1000000000000000000 TO=0x...
+   ```
+
    Save the tx hash from this step — it's needed for prove and finalize.
 
 2. **Prove** on L1 — wait ~1 hour for the L2 output to be proposed, then prove: