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: 1939
Hash: 5cda7e3bab56d7de10e173db8d2d735457666732c920f12f19f8279802fc0136
Previous block: 0a5b35a532b60587d3da2d600969807d838e79d5fe24221ec520f445ad799c83
Next block: 513f25dca0db1f0cae4dd2de67a0d8bf997296d6b2db647b3b84714726314a8a
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159246
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 765a9eaadabc4b6f5f9a17abb5d463d7e6bac7bb5ef80411b8aba2473dd46bda
Median time: 1719159246
Difficulty: 4.656542373906925e-10
Confirmations: 305
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f28
Bits: 207fffff