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: 1071
Hash: 2cb29afd742c5668634c231b57f9ca249d1962fe5d1fb5a427848e723947634e
Previous block: 507269e95bb79f5774653a61db30d2c8ec034998971303b4d1ea1209c464b9cd
Next block: 1c104c7d632b0d21fb4e1ba8cf3a1bfe38c86acc40fed428e6980b4a78843f69
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857847
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 7599f8e3b6fd63a0fa757711066184bc8442031c6d0536fa7e440fc30e7ce8e3
Median time: 1707857846
Difficulty: 4.656542373906925e-10
Confirmations: 1173
Chainwork: 0000000000000000000000000000000000000000000000000000000000000860
Bits: 207fffff