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: 948
Hash: 720e3b0631e972294376d60d13da1966701ea6879d0b132be6001cf903097c48
Previous block: 7ffe96b03195f155fee4d138a4d0a0fbb05f6b7e00e85221e1359cab8c3aa72c
Next block: 0e5a4c40dd53beac1f0402fe470271f07c368ae50a8f5f60a53f1ad3222fe902
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857826
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: aacc258f75b367367c083567b7d7e2a6af61a006cf6879fc7dc6d73d8e559be6
Median time: 1707857826
Difficulty: 4.656542373906925e-10
Confirmations: 1296
Chainwork: 000000000000000000000000000000000000000000000000000000000000076a
Bits: 207fffff