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: 2356
Hash: 320791b57ae4a605e6c0940a05313b4bfeba3b47b8696a6c8b20a250dc8faf7d
Previous block: 04fb2a6720d8a8cb093ccad34219d3d36bd4edb8b630fa6a2df79a35a5a81ccc
Next block: 72393386543a1a427aa512295472232b42a52559c9efa613d02fa84e0dffc60a
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847279
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: cf78ffd610bb1a37370fd05463c7c8bcb3290ca4997f410bad22850b5f554cc8
Median time: 1743847278
Difficulty: 4.656542373906925e-10
Confirmations: 287
Chainwork: 000000000000000000000000000000000000000000000000000000000000126a
Bits: 207fffff