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: 1216
Hash: 21415d0d03391480a2c9f1d09c155b328beb9a5ec5c98d9646ec58b62854e087
Previous block: 0d28787edbe6d8db7859fcfaa24692e818f292a04857bbcf0088bbb0855c66ce
Next block: 30e77299b203d25f23f78e840583569579348a61bc97d310a3a7394e7e6c977e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697610
Stripped size: 218
Size: 254
Nonce: 5
Merkle root: 6d4b153e17fc684a7c8d2fff3b9b16f70ff44ed60a248c175f52eb60b90da36e
Median time: 1718697609
Difficulty: 4.656542373906925e-10
Confirmations: 1028
Chainwork: 0000000000000000000000000000000000000000000000000000000000000982
Bits: 207fffff