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‎.github/setup.sh‎

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ln -s $PWD/bitcoin-28.0/bin/* /usr/local/bin/
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mkdir -p ~/.bitcoin
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cat <<EOF > ~/.bitcoin/bitcoin.conf
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[regtest]
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regtest=1
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rpcuser=user
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rpcpassword=password
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rpcport=18332
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EOF
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echo $(bitcoin-cli --version)

‎.github/workflows/main.yml‎

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name: Run Setup Script
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on:
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push:
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branches:
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- main # Trigger on pushes to the main branch
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jobs:
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bitcoin-setup:
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runs-on: ubuntu-latest # Use the latest Ubuntu environment
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steps:
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- name: Checkout repository
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uses: actions/checkout@v4 # Check out the repository code
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- name: Cache Bitcoin Core
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id: cache-bitcoin
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uses: actions/cache@v3
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with:
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path: |
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bitcoin-28.0
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bitcoin-28.0-x86_64-linux-gnu.tar.gz
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key: bitcoin-core-28.0
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- name: Setup Bitcoin Core
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run: |
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if [ "${{ steps.cache-bitcoin.outputs.cache-hit }}" != 'true' ]; then
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wget https://bitcoincore.org/bin/bitcoin-core-28.0/bitcoin-28.0-x86_64-linux-gnu.tar.gz
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tar -xzvf bitcoin-28.0-x86_64-linux-gnu.tar.gz
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fi
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sudo bash .github/setup.sh
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- name: Start bitcoind in regtest mode
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run: |
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bitcoind -regtest -daemon
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echo "Waiting for bitcoind to be ready..."
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# Wait for bitcoind to start (max 30s)
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for i in {1..30}; do
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if bitcoin-cli -regtest getblockchaininfo > /dev/null 2>&1; then
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echo "✅ bitcoind is ready!"
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break
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fi
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echo "Still waiting for bitcoind..."
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sleep 1
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done
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- name: Verify Wallet Creation
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run: |
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chmod +x submission/01.sh
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WALLET=$(submission/01.sh)
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if [[ "$WALLET" == *"btrustwallet"* ]]; then
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echo "✅ Success: Wallet creation passed!"
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else
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echo "❌ Error: Wallet creation failed!"
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exit 1
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fi
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- name: Verify Change Address Generation
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run: |
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chmod +x submission/02.sh
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CHANGE_ADDRESS=$(submission/02.sh)
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echo "CHANGE_ADDRESS=$CHANGE_ADDRESS"
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if [[ "$CHANGE_ADDRESS" =~ ^bcrt1[ac-hj-np-z02-9]{8,87}$ ]]; then
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echo "✅ Success: Change address generation passed!"
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else
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echo "❌ Error: Change address generation failed!"
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exit 1
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fi
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- name: Verify Adding Funds to SegWit Address
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run: |
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chmod +x submission/03.sh
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ADD=$(submission/03.sh)
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echo "ADD=$ADD"
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BALANCE=$(bitcoin-cli -regtest getreceivedbyaddress "$ADD" 0)
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if (( $(echo "$BALANCE > 0" | bc -l) )); then
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echo "✅ Success: Adding funds to SegWit address passed!"
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else
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echo "❌ Error: Adding funds to SegWit address failed!"
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exit 1
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fi
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- name: Verify Listing the current UTXOs in your wallet.
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run: |
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chmod +x submission/04.sh
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UTXOs=$(submission/04.sh)
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if [[ "$UTXOs" != "[]" && "$UTXOs" =~ "txid" ]]; then
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echo "✅ Success: Listing the current UTXOs in your wallet passed!"
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else
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echo "❌ Error: Listing the current UTXOs in your wallet failed!"
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exit 1
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fi
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- name: Verify Transaction ID
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run: |
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chmod +x submission/05.sh
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TRANSACTION_ID=$(submission/05.sh)
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EXPECTED_OUTPUT=23c19f37d4e92e9a115aab86e4edc1b92a51add4e0ed0034bb166314dde50e16
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if [[ "$TRANSACTION_ID" == "$EXPECTED_OUTPUT" ]]; then
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echo "✅ Success: Transaction ID Check passed!"
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else
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echo "❌ Error: Transaction ID Check failed!"
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exit 1
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fi
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- name: Verify Total Transaction Output
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run: |
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chmod +x submission/06.sh
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ACTUAL_OUTPUT=$(submission/06.sh)
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EXPECTED_OUTPUT=23679108
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if [[ "$ACTUAL_OUTPUT" == "$EXPECTED_OUTPUT" ]]; then
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echo "✅ Success: Total Transaction Output Check passed!"
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else
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echo "❌ Error: Total Transaction Output Check failed!"
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exit 1
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fi
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- name: Verify Raw Transaction Hex
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run: |
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chmod +x submission/07.sh
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ACTUAL_OUTPUT=$(submission/07.sh)
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EXPECTED_OUTPUT=0200000002160ee5dd146316bb3400ede0d4ad512ab9c1ede486ab5a119a2ee9d4379fc1230000000000fdffffff160ee5dd146316bb3400ede0d4ad512ab9c1ede486ab5a119a2ee9d4379fc1230100000000fdffffff01002d31010000000017a91421ed90762e16eaaea188aae19142e5b25bf75d238700000000
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if [[ "$ACTUAL_OUTPUT" == "$EXPECTED_OUTPUT" ]]; then
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echo "✅ Success: Total Transaction Output Check passed!"
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else
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echo "❌ Error: Total Transaction Output Check failed!"
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exit 1
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fi
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- name: Verify Raw Transaction Hex
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run: |
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chmod +x submission/08.sh
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ACTUAL_OUTPUT=$(submission/08.sh)
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EXPECTED_OUTPUT=0200000002160ee5dd146316bb3400ede0d4ad512ab9c1ede486ab5a119a2ee9d4379fc123000000000001000000160ee5dd146316bb3400ede0d4ad512ab9c1ede486ab5a119a2ee9d4379fc12301000000000100000001002d31010000000017a91421ed90762e16eaaea188aae19142e5b25bf75d238700000000
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if [[ "$ACTUAL_OUTPUT" == "$EXPECTED_OUTPUT" ]]; then
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echo "✅ Success: Total Transaction Output Check passed!"
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else
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echo "❌ Error: Total Transaction Output Check failed!"
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exit 1
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fi
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‎README.md‎

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# Btrust Builders: LBCLI Week Two Exercises
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## Instructions
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Exercise should be done using Regtest network.
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1. Fork this repository.
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2. Clone the fork to your local computer.
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3. Add your bitcoin cli commands to the script files in the submission folder. Example:
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```sh
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$ bitcoin-cli -regtest getblockcount
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```
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4. Commit and push your changes to your remote fork.
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5. Confirm your forked repository has a green check mark.
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<img src="https://github.com/btrust-builders/lbcli-week-2-exercises/blob/main/success.png" width="200" />
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6. Submit your solution to this form: [Google form](https://forms.gle/eDRGAJXpLqRxEExR6).
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PS: You can commit and push as often as you like and GitHub Actions will re-evaluate your code every time.
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You will need to look through the auto-grader logs (in the "actions" tab) to see what exactly you got right or wrong.
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‎submission/01.sh‎

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# Create a wallet with the name "btrustwallet".

‎submission/02.sh‎

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# Create a new Bitcoin address, for receiving change.

‎submission/03.sh‎

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# Created a SegWit address.
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# Add funds to the address.
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# Return only the Address

‎submission/04.sh‎

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# List the current UTXOs in your wallet.

‎submission/05.sh‎

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# What is the txid of this transaction
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# raw_tx="01000000000101c8b0928edebbec5e698d5f86d0474595d9f6a5b2e4e3772cd9d1005f23bdef772500000000ffffffff0276b4fa0000000000160014f848fe5267491a8a5d32423de4b0a24d1065c6030e9c6e000000000016001434d14a23d2ba08d3e3edee9172f0c97f046266fb0247304402205fee57960883f6d69acf283192785f1147a3e11b97cf01a210cf7e9916500c040220483de1c51af5027440565caead6c1064bac92cb477b536e060f004c733c45128012102d12b6b907c5a1ef025d0924a29e354f6d7b1b11b5a7ddff94710d6f0042f3da800000000"

‎submission/06.sh‎

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# Calculate total output value of this transaction in satoshis
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# raw_tx="01000000000101c8b0928edebbec5e698d5f86d0474595d9f6a5b2e4e3772cd9d1005f23bdef772500000000ffffffff0276b4fa0000000000160014f848fe5267491a8a5d32423de4b0a24d1065c6030e9c6e000000000016001434d14a23d2ba08d3e3edee9172f0c97f046266fb0247304402205fee57960883f6d69acf283192785f1147a3e11b97cf01a210cf7e9916500c040220483de1c51af5027440565caead6c1064bac92cb477b536e060f004c733c45128012102d12b6b907c5a1ef025d0924a29e354f6d7b1b11b5a7ddff94710d6f0042f3da800000000"

‎submission/07.sh‎

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# Create a raw transaction with an amount of 20,000,000 satoshis to this address: 2MvLcssW49n9atmksjwg2ZCMsEMsoj3pzUP
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# Use the UTXOs from the transaction below
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# transaction="01000000000101c8b0928edebbec5e698d5f86d0474595d9f6a5b2e4e3772cd9d1005f23bdef772500000000ffffffff0276b4fa0000000000160014f848fe5267491a8a5d32423de4b0a24d1065c6030e9c6e000000000016001434d14a23d2ba08d3e3edee9172f0c97f046266fb0247304402205fee57960883f6d69acf283192785f1147a3e11b97cf01a210cf7e9916500c040220483de1c51af5027440565caead6c1064bac92cb477b536e060f004c733c45128012102d12b6b907c5a1ef025d0924a29e354f6d7b1b11b5a7ddff94710d6f0042f3da800000000"

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