The user wants a Binance Square "Did You Know?" post with specific constraints:
- No markdown
- Start with "Did you know?"
- 100-140 words
- Expand the fact with 2-3 interesting context sentences
- End with a surprised reaction emoji (written out as text, e.g. 'Mind blown!') and a question
- Final line: #DOT #Chainlink #CryptoFact #LearnCrypto

Let me craft this carefully.

First, the core fact: "Satoshi Nakamoto has never spent a single Bitcoin from the genesis block"

I need to expand with 2-3 context sentences. Let me think of interesting context:
1. The genesis block (Block 0) contains 50 BTC that are unspendable due to how Bitcoin's code works
2. Satoshi mined many early blocks but those coins remain dormant
3. The genesis block has a hidden message: "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks"
4. Estimated 1M+ BTC held by Satoshi across ~22,000 addresses, all untouched
5. The 50 BTC in genesis block can't be spent because of a quirk in the code

Let me write a draft:

"Did you know? Satoshi Nakamoto has never spent a single