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: 1414
Hash: 5bf430658bff60b33414cc4ea58e1649ebc61756305efff718498647e3ad6b3e
Previous block: 750135505a40a44e785dbb2adaee45a4c34c8a6dcc1ddf27fff02ad089cc4f00
Next block: 11474bbf4e39c8c558a1bc48784cc05c6fa73070a851a750c8ff1964e51badca
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697643
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: e863bfd85947a4dc9239439951fb1976980a205dec35fc35b3fc90b83935d3e2
Median time: 1718697642
Difficulty: 4.656542373906925e-10
Confirmations: 830
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b0e
Bits: 207fffff