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: 350
Hash: 1bb2337b4eb772d8630b3893ffd9a27cc0e324fb5a1280522928c36af5626fbe
Previous block: 5401ab0ebe089dc7fcc545ebde0fe149065dfddd218c612a13c0a4f886be1ce8
Next block: 542e1d9d0acb367ee7ea984aa8fd8c4cc929dfc16303a43052d493fe6c863ef9
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597926
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: f464c8fcb1b4650bf42cd17a4030d1f6b93bc607a0e2d8468742b6556312968a
Median time: 1701597925
Difficulty: 4.656542373906925e-10
Confirmations: 1894
Chainwork: 00000000000000000000000000000000000000000000000000000000000002be
Bits: 207fffff