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: 942
Hash: 18a5d20d5324b51f25aae8d4d52b014f8af436297b8e141bc815687ace7084c3
Previous block: 00328c7fb361093f5723a72a0236ef8d8dc68cffecfd6a67c2b58354beadc480
Next block: 464bc14e5c783aa4cefc28f6b80e8b1a6b865304f8473e55b80e2e06c59d36f6
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857825
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: ea6cdbcbd1c3363195bb994f46ae163bcff7f0b89deeb52f4055415e3443afc1
Median time: 1707857825
Difficulty: 4.656542373906925e-10
Confirmations: 1302
Chainwork: 000000000000000000000000000000000000000000000000000000000000075e
Bits: 207fffff