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: 2117
Hash: 258f5f5c59ae3fd8a83dfb57e6b34e6403c823952a8e26cf009cdb36dbd83bf5
Previous block: 744a656e0c5b3f858db9a0fd91273d70c04f5113833ed489d789b5acc75e6f64
Next block: 79bc34ded00ace241966444e328b4bb11f15a2014232582c5d1483c31f634482
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964789
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 55fd446897c45c802eb862a3c51107adbd0f323ddaf639d9080c2488063eeee9
Median time: 1728964789
Difficulty: 4.656542373906925e-10
Confirmations: 127
Chainwork: 000000000000000000000000000000000000000000000000000000000000108c
Bits: 207fffff