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: 663
Hash: 5a250fe74eb1d68e7c6d6b4445d539938ff1967bebb749617c6434340c858047
Previous block: 331dfc82264eb1534a32c66bbb17e69f8712e628d4bde9e9fdc01423f90f8cdf
Next block: 256269e408add1287a76606f7bf9fff65dd71ef3c162d679e4d16b88a0a5fcc7
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864254
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 722a7a16712404e610cb362b089537ffd952e84fad8854159624fa02bd87e6d0
Median time: 1701864253
Difficulty: 4.656542373906925e-10
Confirmations: 1581
Chainwork: 0000000000000000000000000000000000000000000000000000000000000530
Bits: 207fffff