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: 1830
Hash: 2a634283a7e76c898f31a86c2cb715cbb81d990ce35e102956fd2acfdc0b7b5f
Previous block: 52f85b508d44f4a674af641adaa553ad4f878a3c3d54c7cd6daf56c019bff3e0
Next block: 13a63abeadd82db15cb3f076ec40f171e64f73f56199c2bd87f28474d09c1f2a
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159228
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: c61b762be98042970b2a35ecf20ee77743b18fa75f2e7ed83d70ae696f5d6ce8
Median time: 1719159227
Difficulty: 4.656542373906925e-10
Confirmations: 414
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e4e
Bits: 207fffff