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: 288
Hash: 3d356c973f9c4073d39315441630c20f7a4ce4424080123d7ebaa438134828c3
Previous block: 28e9308274e75a9ae403cf5cc538954f11682016560be671d469d928c77989ed
Next block: 41b9434ca7b1830f80a1081a9976674a178b968293d66b926c6a9499ce6c98b2
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597915
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 4c532d110043816c9e5ec67cc171b09398dde0c9a41524f9b469f5bc610c8a9c
Median time: 1701597914
Difficulty: 4.656542373906925e-10
Confirmations: 1956
Chainwork: 0000000000000000000000000000000000000000000000000000000000000242
Bits: 207fffff