Bitcoin’s mining difficulty was lowered to 31.36T at block height 756,000, the first time the difficulty has been lowered in nearly two months. At present, the average hashrate of the entire network is 224.41 EH/s.

https://explorer.btc.com/btc/insights-difficulty

Stats:

Difficulty:

• https://www.bitrawr.com/difficulty-estimator
• https://www.coinwarz.com/mining/bitcoin/difficulty-chart
• https://bitcoinexplorer.org/difficulty-history
• https://insights.braiins.com/en/cost-to-mine/

Here's an article that has some general info about bitcoin mining difficulty.

Network Difficulty, Share Diffiaculty and Hash Functions
https://hashrateindex.com/blog/crypto-mining-network-difficulty-share-difficulty-and-hash-functions

Hashrate:

• https://www.coinwarz.com/mining/bitcoin/hashrate-chart
• https://bitinfocharts.com/comparison/hashrate-btc-ema14.html#3y

ASIC Prices:

• https://data.hashrateindex.com/rig-index-data

A great tool to monitor the progress over the 2,016 block epoch is fork.lol's Difficulty Retarget chart:

• https://fork.lol/pow/retarget

And some great Dashboards, overall:

• https://timechainstats.com
• http://vaccaro.network:3838/bitcoin/#shiny-tab-bitcoin_pools_dashboard
• https://mempool.space/mining
• https://mempool.space/graphs/mining/pools-dominance
• https://insights.braiins.com

It's over, bitcoin is dead

Now my USB miner has a better chance to hit a block!