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: 1205
Hash: 5945a526225e7ed9205a83f0796ea35e143b76b5603358f2b34fca916ada4c62
Previous block: 5115216ef6e04599e8d9583f5834ee5d03671c71db855341fe31e1dd11b8e233
Next block: 3ef4389283cfacfecb3436e57baec4ab36f148c6e77bc8e3232cbeaa92e8871f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857869
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: efdf9417e1a45a0298b419ba030a6de31a7bcedfa8840f7a7fc5de44c4ada0ff
Median time: 1707857868
Difficulty: 4.656542373906925e-10
Confirmations: 1039
Chainwork: 000000000000000000000000000000000000000000000000000000000000096c
Bits: 207fffff