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.

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Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 1429
Hash: 51c444300c26c4399a6ad67676a3f2a2d45e3e7895cc09643203665c5ee44d89
Previous block: 11e4446d5cbd1dcfea8850fef22132e94b4f05c20030325e150fc05c7dd50137
Next block: 3a4daba6eb211e378fe119229debd03d6a5f88e2ab06a82970297de65215aebb
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697646
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 1568fa7b8ce36f3f384659ec90f747081cdaa6ed01cdb73be92494fd982b7a74
Median time: 1718697645
Difficulty: 4.656542373906925e-10
Confirmations: 815
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b2c
Bits: 207fffff