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: 240
Hash: 607b6f6d69ebecd364b5806b586484ee65d0c649942f18ff2e3f3e1fad894eba
Previous block: 43ef756940aaaf8f8a3d34ecb1e9456c9f51a88b8ae9b3aa58625928ae37d6bd
Next block: 3023c5bff625b0e2f0c9bcf90258da845bcf1b09f40bd8f73b150482299e7de9
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597907
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: acfa59b7d6c01fa2f9386ae55f4074a69c3325c13f1b94f12c98635ee9ca99ae
Median time: 1701597906
Difficulty: 4.656542373906925e-10
Confirmations: 2004
Chainwork: 00000000000000000000000000000000000000000000000000000000000001e2
Bits: 207fffff