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. mxMfLjAez

Height: 1831
Hash: 13a63abeadd82db15cb3f076ec40f171e64f73f56199c2bd87f28474d09c1f2a
Previous block: 2a634283a7e76c898f31a86c2cb715cbb81d990ce35e102956fd2acfdc0b7b5f
Next block: 495bb1a9370f86ce52307a1b1db7202cf43fee28c9ccbffb16dad86b1bcb9ad7
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159228
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 232556d953cb53674a4ba8ab8ebf35d8bbd48d3a910213b7849cd27a491e616c
Median time: 1719159228
Difficulty: 4.656542373906925e-10
Confirmations: 413
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e50
Bits: 207fffff