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: 677
Hash: 6171f36e85d6092bef215dd143c2fe3db4388a7935508a7aa2719a7567d07c86
Previous block: 0085e43cd630149ed3092261182005e6d56e24da47edf4ee1e4405c3c20049ea
Next block: 370d568066323cbdd02e975fc1239a437bf204571a73a55cc6ac6217446540a3
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864256
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: e013bb69649590506892ace355b8e2f3e4a5a8228aa3a9bdac0770031d46e0fb
Median time: 1701864255
Difficulty: 4.656542373906925e-10
Confirmations: 1567
Chainwork: 000000000000000000000000000000000000000000000000000000000000054c
Bits: 207fffff