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: 837
Hash: 74406b6df61782565d65bca1cdc2169ae75806568633ca828f88812ef1c117ba
Previous block: 2531cdaa860c278b6c2b557f416142fb8497d884a85c6f1c634cb1372d0d8a9d
Next block: 684829a63f99d8f6aed464f8b96f05fe7ae1a81907bceebe9a41a637236bdb4d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857808
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: e2581ae0b760333f510d7c95c995db15374e80510f48d9fe5c387e2850b72693
Median time: 1707857807
Difficulty: 4.656542373906925e-10
Confirmations: 1407
Chainwork: 000000000000000000000000000000000000000000000000000000000000068c
Bits: 207fffff