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: 1273
Hash: 3f988a75a61e84c115a575176a1fc42544dc18b97b0eb5ecba433f867001150e
Previous block: 321840d14ffed6865c50143c86416a988b5779ff4fa4ebf36070e0e9856b702e
Next block: 27b15c610e6cdafcc99496c613404b92c35af97df9a79145ee09e67a07d213d8
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697620
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 52fc3507ee4354a299d7b2f82cd8bc8a4bd7e9def3805a41389b676d39f90fe8
Median time: 1718697619
Difficulty: 4.656542373906925e-10
Confirmations: 971
Chainwork: 00000000000000000000000000000000000000000000000000000000000009f4
Bits: 207fffff