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: 1919
Hash: 2cab4dfaf1321cf4ca43b001b5a391819d4166599d4d339f955e65ff9ff97431
Previous block: 57fcf071302d9a66a69f81c28c978c4244de74b6fc8caddea5004b6be5c28a6e
Next block: 5bb1eb2aa2d304b3b64510cced4b9c763abd30853ef8b9ce24bdf257dbd61920
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159243
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 907b985dc59fc386e092a138e8e8a758b880949a5e67134dece9de7a581f9148
Median time: 1719159242
Difficulty: 4.656542373906925e-10
Confirmations: 325
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f00
Bits: 207fffff