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: 2105
Hash: 6b0423ebd6e264bbb73decc1899e75cf48ebb0743b6c34d9a843ec44f0426fcb
Previous block: 552348b654ab8b94a8b3d1b9b343829ec65545e9e4a37119fee6b1ffe101b89a
Next block: 1e394f779a815b557672cf3ac362a50c0c9a43b36ebaba776f6edb4d64029d69
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964787
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: b2de271207f38f425772fd8bc5fec6a57e3b3d00ecbf7105d2e1030dd1a7db48
Median time: 1728964787
Difficulty: 4.656542373906925e-10
Confirmations: 139
Chainwork: 0000000000000000000000000000000000000000000000000000000000001074
Bits: 207fffff