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: 313
Hash: 1692cfb36dec018a24e7b7c3a935d976057612e751fd6b7248380d3c052ef6f4
Previous block: 55099cfe1e4d31b5593bdba6f5d50e646d2350a1d72a154e10c297cc0cc7672a
Next block: 3119378a6ce5f4e7f4d9feba4a84b828db2a92a14bd8d66651b3553b87a38fe5
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597919
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: a8c5a1177b6045b3836e2b0a0b8cde86bffe49ae8daade9a6118f80cd601dd13
Median time: 1701597919
Difficulty: 4.656542373906925e-10
Confirmations: 1931
Chainwork: 0000000000000000000000000000000000000000000000000000000000000274
Bits: 207fffff