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. mkrgsKuFE

Height: 1570
Hash: 74116d3098f48dc59d59f07a869124e3fd7256be849fc9c8cb11281d8307fcfd
Previous block: 668c86455c4ace8e0606f0198e2f7ac810df062b6f2c54b930c68dcb0108e20c
Next block: 2cbc5df5abdbf556d3dc728bc08924fbb91dcc40f798044a2a2d3732d7d594d0
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1708932131
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: b793d79eb4187640f8965b5468198f503592d5e122f841216e1dc69532a2ecd1
Median time: 1708932130
Difficulty: 4.656542373906925e-10
Confirmations: 39
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c46
Bits: 207fffff