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: 801
Hash: 766a3821eae2b3b97978243da27263e81bf8006839247b0efd7cd2cd7e3d09b9
Previous block: 564371e192f9a2f724d243ae476400a149b1c50e4243a429e7374d70c76d8e4e
Next block: 4b91b7c096f17661b31308870f41e21543fe8b1a5ec0f91b82313a50c457e6f7
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864277
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 09c2c49c527e51ab82468848c73b9dfca476a8745cbe2bcc08d7f2be428a8306
Median time: 1701864276
Difficulty: 4.656542373906925e-10
Confirmations: 1443
Chainwork: 0000000000000000000000000000000000000000000000000000000000000644
Bits: 207fffff