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: 1729
Hash: 4220894403508ac2fedb8376a4e1e804f0b977c1f32652d0eec95dd770071bfb
Previous block: 0eee2a64aa34fc15d8c9c514d4e7467b9cbd15af76f46b5998322edb46c8f23c
Next block: 5b04f908a6d0304bcbfa57a4d8b2341c97b734fe91bd630e9e9f000172a430a1
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159211
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 67e5807cc1a4c570618d5a11818c86f5b40559a4867d630bb438010fbc0e1a6f
Median time: 1719159211
Difficulty: 4.656542373906925e-10
Confirmations: 515
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d84
Bits: 207fffff