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: 1675
Hash: 5ad7e3e9f88e56c5022c014f693ac845ebf3966b5d5e3e0cbfcd75531dd077c9
Previous block: 7176fcaf5f249bd656c87cc5d0bd078fb9b1f93fd90b41d7f1be8fbadf6f6df7
Next block: 51d5bcc65e2073adcb0a6c3a55d502b90790a4b0a42e0d5817aae684101522c2
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159202
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: cb43a9b1649a21c58e74a23d8ba56e0100d46aca5b549d8f924031c9c688808c
Median time: 1719159202
Difficulty: 4.656542373906925e-10
Confirmations: 569
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d18
Bits: 207fffff