This was block number 3654


this link shows  blocks 3621 to 3700


https://www.blockchain.com/btc/blocks?page=12549

It would be interesting to check the status of these 80 blocks.

3621 was moved in 2015
https://www.blockchain.com/btc/address/17t6mqu7C7m9b3i2nsZD3GbJkk7Zf9G5CW

3653 untouched

3654 moved today https://www.blockchain.com/btc/address/17XiVVooLcdCUCMf9s4t4jTExacxwFS5uh

3655 untouched

3656 moved in 2011 https://www.blockchain.com/btc/address/16hA7GTgPvwwQQiYLKoifmpf4i41zcZfMF
3657 moved in 2011 https://www.blockchain.com/btc/address/12Mo25FhMY9Z378vksvbNS9qYtKd3todNS

3658 untouched
3659 untouched

3660 moved in 2011 https://www.blockchain.com/btc/address/1F1njnLEnoCsm69bSdY3MRkeXytbBPDSkb

3661 untouched

3662 was moved in 2013
 https://www.blockchain.com/btc/address/1JjoRz995zpFY1QNTa8vnTxssWZXQPwVQu

3663 untouched
3664 untouched

3665 was moved in 2011
https://www.blockchain.com/btc/address/1BjpESo9nYoqLUp58YoqsnGSyHJYNqp9T9
 
3666 untouched
3667 untouched
3668 untouched

3669 was moved in 2013
https://www.blockchain.com/btc/address/198y3FQrgb1QNhCRo9EWnTB2ddc4vyH61a

3670 was moved in 2011
https://www.blockchain.com/btc/address/1JZFZDBVDt38QE3NQeVKLLhdrGbzXBcyz6



so  some of these blocks have been moved.

the market won't crash over this and only morons would panic sell.