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: 231
Hash: 0989ae307ca21b1f67ee71201f14045c8e5092583cb9f0f728f9cf3efc93c5d6
Previous block: 4e23a39fbd52bde65955fabc3fc5fc3ef18ca6c6d207e38d9b408777aafebe40
Next block: 44f4b50f99a20506c14771ceb3fb2844aa5a3b94ad95487a22d8dcd68fafa91b
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597906
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 69870be76ef6f22f5ed17040e27d7d1a004ace65ea85434cf37abb4ef9d7d59d
Median time: 1701597905
Difficulty: 4.656542373906925e-10
Confirmations: 2013
Chainwork: 00000000000000000000000000000000000000000000000000000000000001d0
Bits: 207fffff