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: 57
Hash: 79cd05adc9f63060996b7d05624033aeb56bb6e10855771162ca7b0fb9129ffe
Previous block: 55c4054b6253e1a25f21977431067d8151eae79f11fe24e3bf8f7702d2ac0482
Next block: 1524ccea349ba9f976be4262b0397e6305814f7d7a68d03887424f6698c207da
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597877
Stripped size: 217
Size: 217
Nonce: 2
Merkle root: 7e975093df19a82b811fb014d0e86489ca2cf20a658224936dadbd3a715d9969
Median time: 1701597876
Difficulty: 4.656542373906925e-10
Confirmations: 2187
Chainwork: 0000000000000000000000000000000000000000000000000000000000000074
Bits: 207fffff