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: 1573
Hash: 678e4067700a139f976ad88373bc74d2bedf3242292e761729ca44d481179a96
Previous block: 13677d7d3bdb9a6bdd9aff79a0d817704eb9138c8a1db6d8137737de70021367
Next block: 17575fcbe40fe182210d9a720d3e0acb5f82c7d311ee89b4dcc281b072c8d0b8
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697670
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: c2f14e61efad1f5658d57591c4db35a40dc73b30da0249784f87ec69b734b212
Median time: 1718697669
Difficulty: 4.656542373906925e-10
Confirmations: 671
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c4c
Bits: 207fffff