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: 1929
Hash: 2e2833e55849080574a53b65594c351b84810acc24e66722433065c99165de38
Previous block: 6e63dcd285b77bc39b8030fecffa7ef1af412a1da84eef5ad3f8180ac863e339
Next block: 6a44bd7b28b2ace537eab73e8d35e75a52abd61312b23315d8391e1638673b7c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159245
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: da2dc592dd2af37dd1ccaf01c7c694a8bd31f7858b3b44c45ad181b053812bf4
Median time: 1719159244
Difficulty: 4.656542373906925e-10
Confirmations: 315
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f14
Bits: 207fffff