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: 799
Hash: 3794501747be2366a4e72606ae5b6d62d473acd894035011418416273340a80e
Previous block: 57d78930a44eb52920c68a137dfcdfad96affac5f0820472103e60f49906d6f4
Next block: 564371e192f9a2f724d243ae476400a149b1c50e4243a429e7374d70c76d8e4e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864277
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: f1c61ab1a3cca1f23483b716c3687a67aa93b9f3e3b9566920146b5ba7fe8528
Median time: 1701864276
Difficulty: 4.656542373906925e-10
Confirmations: 1445
Chainwork: 0000000000000000000000000000000000000000000000000000000000000640
Bits: 207fffff