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		<div class="sidebar-heading"><a style='color:white;text-decoration:none;' href="<?php echo $_SERVER['HTTPS'] ? 'https' : 'http'?>://<?php echo $_SERVER['HTTP_HOST']?>">btcschools.net</a></div>
	  
		<div class="list-group-header">Bitcoin Intro</div>
		<div class="list-group list-group-flush">
			<a href="bitcoin_start_install.php" class="list-group-item list-group-item-action bg-light">Bitwasp Install</a>
			<a href="bitcoin_start_blockchain.php" class="list-group-item list-group-item-action bg-light">Bitcoin Blockchain</a>
			<a href="bitcoin_start_key.php" class="list-group-item list-group-item-action bg-light">Private/Public Key</a>
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		<div class="list-group-header">Bitcoin Client</div>
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			<a href="bitcoin_client_electrum.php" class="list-group-item list-group-item-action bg-light">Electrum</a>
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		<div class="list-group-header">Bitcoin Script Types</div>
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			<a href="bitcoin_script_p2pkh.php" class="list-group-item list-group-item-action bg-light">Bitcoin P2PKH</a>
			<a href="bitcoin_script_p2sh.php" class="list-group-item list-group-item-action bg-light">Bitcoin P2SH</a>
			<a href="bitcoin_script_multisig.php" class="list-group-item list-group-item-action bg-light">Bitcoin MULTISIG</a>
			<a href="bitcoin_script_nulldata.php" class="list-group-item list-group-item-action bg-light">Bitcoin NULL DATA</a>
			<a href="bitcoin_script_p2wpkh.php" class="list-group-item list-group-item-action bg-light">Bitcoin P2WPKH</a>
			<a href="bitcoin_script_p2wsh.php" class="list-group-item list-group-item-action bg-light">Bitcoin P2WSH</a>
			<a href="bitcoin_script_p2sh_p2wpkh.php" class="list-group-item list-group-item-action bg-light">Bitcoin P2SH.P2WPKH</a>
			<a href="bitcoin_script_p2sh_p2wsh.php" class="list-group-item list-group-item-action bg-light">Bitcoin P2SH.P2WSH</a>
			<a href="bitcoin_script_p2sh_locktime.php" class="list-group-item list-group-item-action bg-light">Bitcoin P2SH.LOCKTIME</a>
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		<div class="list-group-header">Bitcoin HD Wallet</div>
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			<a href="bitcoin_hd_mnemonic_code.php" class="list-group-item list-group-item-action bg-light">Bitcoin Mnemonic Code</a>
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			<a href="bitcoin_hd_derivation_path.php" class="list-group-item list-group-item-action bg-light">Bitcoin Derivation Paths</a>
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		<div class="list-group-header">Bitcoin Tools</div>
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			<a href="bitcoin_tool_hash160.php" class="list-group-item list-group-item-action bg-light">Bitcoin HASH160</a>
			<a href="bitcoin_tool_sha256d.php" class="list-group-item list-group-item-action bg-light">Bitcoin SHA256D</a>
			<a href="bitcoin_tool_sha256.php" class="list-group-item list-group-item-action bg-light">Bitcoin SHA256</a>
			<a href="bitcoin_tool_ripemd160.php" class="list-group-item list-group-item-action bg-light">Bitcoin RIPEMD160</a>
			<a href="bitcoin_tool_base58.php" class="list-group-item list-group-item-action bg-light">Bitcoin BASE58</a>
			<a href="bitcoin_tool_wif.php" class="list-group-item list-group-item-action bg-light">Bitcoin WIF</a>
			<a href="bitcoin_tool_verify_script.php" class="list-group-item list-group-item-action bg-light">Bitcoin Verify Script</a>
			<a href="bitcoin_tool_little_endian.php" class="list-group-item list-group-item-action bg-light">Bitcoin Little-Endian</a>
			<a href="bitcoin_tool_ecdsa.php" class="list-group-item list-group-item-action bg-light">Bitcoin ECDSA Signature</a>
			
			<a href="bitcoin_tool_ecrecover.php" class="list-group-item list-group-item-action bg-light">Bitcoin EC Recover</a>
			
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		<div class="list-group-header">Bitcoin Others</div>
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			<a href="bitcoin_cancel_tx.php" class="list-group-item list-group-item-action bg-light">Bitcoin Cancel Tx (RBF)</a>
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		<div class="list-group-header">Bitcoin Advance</div>
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			<a href="bitcoin_merkle_root.php" class="list-group-item list-group-item-action bg-light">Merkle Root</a>
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		<div class="list-group-header">Bitcoin Tools</div>
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			<a href="bitcoin_tool_utxo.php" class="list-group-item list-group-item-action bg-light">Bitcoin Get UTXO</a>
			<a href="bitcoin_tool_txhex.php" class="list-group-item list-group-item-action bg-light">Bitcoin Get Tx Hex</a>
			<a href="bitcoin_tool_mtp.php" class="list-group-item list-group-item-action bg-light">Bitcoin Median Time Past</a>
			<a href="bitcoin_tool_unit_converter.php" class="list-group-item list-group-item-action bg-light">Bitcoin Unit Converter</a>
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