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: 37
Hash: 4965749ef0d46586a905a0de0774d56e0aca05e9270590fae4e567523a2c3de5
Previous block: 66718ec59a466458d17eb44cf15c26227bc07388e123ea0d8654cb41c94ec9ce
Next block: 21dd5a1793791c512d052b7811c6ef952c5e5458ffff0780832689ad78592318
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597873
Stripped size: 217
Size: 217
Nonce: 2
Merkle root: 3d3f8faced25a8984e7e8843fcba780cec2a991345ce902280debf1d03fc0b96
Median time: 1701597873
Difficulty: 4.656542373906925e-10
Confirmations: 2207
Chainwork: 000000000000000000000000000000000000000000000000000000000000004c
Bits: 207fffff