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: 176
Hash: 155f987d4476d6da25547c5f5f20fba750e58e4ba1a7d6443b3f2adb3a1064b8
Previous block: 318c6ac35ea5356fa268917ecb2ff6b3772f11dfa6d10d0e7d1177f5f3d8b27c
Next block: 0876cc773393ad301fa15fb89895fa26098566b10518820b3259b28a3098d7e8
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597897
Stripped size: 218
Size: 218
Nonce: 3
Merkle root: d8758298b70085667408c7fd7e958559d83b4453f0f329b56566afc36916c5da
Median time: 1701597896
Difficulty: 4.656542373906925e-10
Confirmations: 2068
Chainwork: 0000000000000000000000000000000000000000000000000000000000000162
Bits: 207fffff