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: 266
Hash: 139835ad359c82f9ae78d73597e04af893023e86785afaafba0b8c1b253ff914
Previous block: 08253458f56a836d779a2ecc92836d675595dd76cd41e35eeb5b2906dcda0d67
Next block: 2dd1cbc9233b285b786e748785e6432d9a2f87d8e0ffc33b9ebb0ed3424baeeb
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597912
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 29e76dcee40d07f710a5951d60c26a60702e622a9438c616ba3ef2db5993ef7b
Median time: 1701597911
Difficulty: 4.656542373906925e-10
Confirmations: 1978
Chainwork: 0000000000000000000000000000000000000000000000000000000000000216
Bits: 207fffff