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 Now you too can manually audit the bitccoin without employing and cryptographic proofs:

def audit_bitcoin_supply():
	block_count = rpc_connection.getblockcount()
	total_supply = 0.0
	total_utxo_amount = 0.0
	for block_number in range(0, block_count + 1):
		block_hash = rpc_connection.getblockhash(block_number)
		block = rpc_connection.getblock(block_hash)
		coinbase_txid = block['tx'][0]  # Coinbase transaction is always the first transaction
		coinbase_tx = rpc_connection.getrawtransaction(coinbase_txid, True)
		block_reward = sum(vout['value'] for vout in coinbase_tx['vout'])
		total_supply += block_reward
	unspent_txos = rpc_connection.listunspent(0)
	total_utxo_amount = sum(utxo['amount'] for utxo in unspent_txos)
	print(f"Total Bitcoin Supply (based on block rewards): {total_supply:.8f} BTC")
	print(f"Total Bitcoin in UTXOs: {total_utxo_amount:.8f} BTC")
	print(f"Difference: {total_supply - total_utxo_amount:.8f} BTC") 
 You can't audit fractional reserves in CEX. Not for Bitcoin and not for Monero. 
 People who fractionally reserve bitcoin go bankrupt.  See FTX for details.

Rehypothecating the most bullish asset in human history in it's infancy when volatility is incredibly high is not something experienced asset managers would even consider.  It takes a fool like SBF to have the hubris to even attempt it.  And you see where that ended him up, in a prison cell. 
 Those who don't know how to operate proper fractional reserves go bankrupt.

Binance for example managed quite well so far.

Coinbase and BlackRock will only go bankrupt when USD hyperinflates as they can print as many USD for cash settled ETFs as they need to not default on bad trades thanks to the BlackRock-FED connection. 
 And what proof do you have that binance fractionally reserves things?  You have none this is just speculation and conjecture. 
 Well, as you are not new you seem to have ignored the discussions around it for at least 3 to 4 years. What does that tell me about you?

It at least tells me that most Bitcoiners so far did not learn anything from Monero's past which to me signals that Bitcoin is not fit to challenge the state apparatus. You either do have exceptional observation, adversarial thinking and executing strategies (like early Btcoiners from 2009-2012) or you will get played by forces that do.

 
 For a starter try to use a search engine and put in Binance + fractional reserves then read up on a ton of observations, test runs, withdrawal issues,... 
 Yes but I don't care in the least.  I give exactly 0.00000000 fucks about Binance or if/when/where/why they are defrauding people. 
 There are very real threats to bitcoin, Binance is not one of them. 
 I don't care if Binance is rehypothecating bitcoin.  It matters nothing to me, nor to bitcoin.  Anyone stupid enough to do that will be exposed in the end.

Binance is no threat to bitcoin.