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: 2339
Hash: 72186fd82a6ecf5f0df0e9334bcd2a86a6670ecb8b4ff950c5c11181079dce84
Previous block: 3c7497a6a166c6a982fd34edb783a59b24283ed37460d8ed0aca61bf1638bf42
Next block: 3cd21096cc8fa59513fc8f504fcb7acc8cb1861b0ed0263a27d9d7ab4ad5a363
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847276
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 4c67d0cb86f2679e3aa891342bd582e78504f749dbfff3565688069e14af9c05
Median time: 1743847276
Difficulty: 4.656542373906925e-10
Confirmations: 304
Chainwork: 0000000000000000000000000000000000000000000000000000000000001248
Bits: 207fffff