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: 2137
Hash: 765bb3c0851f68a22d50b484fb5c43582287ede9d243cfa838b453eed47d7cc5
Previous block: 47ee694224440a21e4afa7ad9a8fea29c98f974bcfcb0473e865e6233cc644ef
Next block: 25de30ea7a03024ab192dc63575d9c9e4c87b5e3fffcc934f8ff6e13f694bfec
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964793
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: c955ba5e7ad08ed07bb462062b6bcfce75c61cb4170086859f9814689f4270fe
Median time: 1728964792
Difficulty: 4.656542373906925e-10
Confirmations: 107
Chainwork: 00000000000000000000000000000000000000000000000000000000000010b4
Bits: 207fffff