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: 1728
Hash: 0eee2a64aa34fc15d8c9c514d4e7467b9cbd15af76f46b5998322edb46c8f23c
Previous block: 256cb5ec55ac7f8b888b549a804a1794b965418d5defde841cd1dace2b570286
Next block: 4220894403508ac2fedb8376a4e1e804f0b977c1f32652d0eec95dd770071bfb
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159211
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: ddc876d14c2bd6e8ff43fe37a2a90d300fa603329b982a88ee0bdf79b04b402d
Median time: 1719159210
Difficulty: 4.656542373906925e-10
Confirmations: 516
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d82
Bits: 207fffff