The explorer is running in 'regtest' mode. This saves disk space, but there is limited data.
The code for this application can be found at github.com/pdxrod/blockchain_explorer.

home    blocks

Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mgqFp9Dhy

Height: 2200
Hash: 3ef6e57f1d7b8f5a0eb722096f52397742e8ef64582425cbfa9d475d008f60f7
Previous block: 23756d9d4292ef260322268519dfda6fbef7facf8e139ed7f7e187378ad11627
Next block: 26b4fe4dc336a07a4ac59c1f5457972831707a8a1bb8b7f751ab71d6b2f4fa24
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964803
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 914d524a7830b97393c117fa33161aa47c4f400be6581578c390cfe5dffc2bb4
Median time: 1728964802
Difficulty: 4.656542373906925e-10
Confirmations: 44
Chainwork: 0000000000000000000000000000000000000000000000000000000000001132
Bits: 207fffff