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: 1431
Hash: 54c1ad13c0b0ff245177f52bd9e5376694de37f49cccc608049339822ac554d8
Previous block: 3a4daba6eb211e378fe119229debd03d6a5f88e2ab06a82970297de65215aebb
Next block: 5e95fc46f8ff802abbee006db799a313ffc9259ce1b2f2ffef6b6d08c256d0f3
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697646
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 09df54e7cb6c422c0ecca627760dce7562b09dc028163117e87fe4febbb8c8ee
Median time: 1718697645
Difficulty: 4.656542373906925e-10
Confirmations: 813
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b30
Bits: 207fffff