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: 2456
Hash: 267dd2b659aa84f3678d9ccb37356b6866755e550f57a2466d4be1d6b70a12ec
Previous block: 5b3596744249094b15971bdcac64725cee24d0688c6d8c450ff2d398b3626215
Next block: 46e9270fda93beeb086ab93df3ca159caae9e63f659ed41478a219b396b08221
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847296
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 5c2f07fc0c1913d8d9d2aae20b72aec883580c74df1abe3a7d05ab75c0e1dd62
Median time: 1743847295
Difficulty: 4.656542373906925e-10
Confirmations: 187
Chainwork: 0000000000000000000000000000000000000000000000000000000000001332
Bits: 207fffff