Claim : In Block 124724, user midnightmagic mined a solo block to himself which underpaid the reward by a single Satoshi and simultaneously destroyed the block’s fees. This is one of two only known reductions in the total mined supply of Bitcoin.
Evidence/Argument: There are many different Bitcoin block explorers one could use to analyze a specific block. I used blockchain.com because it is well known and has been around for a long time, so I trust the source. If you inspect the hash of Block #124724, you’ll see that the block reward is 49.99999999 BTC. Meanwhile, other blocks, such as Block #124745 have a block reward of 50 BTC.
This confirms the claim in the first sentence that the block reward in Block #234724 was in fact underpaid by one Satoshi.
Status : Confirmed
NOTE: The claim in the second sentence needs additional analysis. I will let the community hop on it