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: 2505
Hash: 317a2cadc49295687d4ff540fe7b7f413b380eddb48535a47d3e57383bf22f25
Previous block: 40ccf9a6a78a3a63ae15d8f3fbdffd5c33c604510c2f451fa8ea01407577108b
Next block: 71f145e476cbd937ba6315a65ea658967dbdb3aa50a1afac82221416651de2b6
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847304
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 30bc2682e6e9c639be45efeca6ba5601618c4892588c7e2cb0001bf4c924f779
Median time: 1743847303
Difficulty: 4.656542373906925e-10
Confirmations: 138
Chainwork: 0000000000000000000000000000000000000000000000000000000000001394
Bits: 207fffff