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: 311
Hash: 0019ac60d5b321738ef27a5c4917b081ca1fcdb42077a7b713cded54e25d0e04
Previous block: 2264a1e1b09c37355cbf01780a4f0faefb8ea7cb526c53263658a391bfb83367
Next block: 55099cfe1e4d31b5593bdba6f5d50e646d2350a1d72a154e10c297cc0cc7672a
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597919
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 924e993268106de01be7b16b496bcd66d4d227cfe60988c025c2fc578ea0bc93
Median time: 1701597918
Difficulty: 4.656542373906925e-10
Confirmations: 1933
Chainwork: 0000000000000000000000000000000000000000000000000000000000000270
Bits: 207fffff