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: 179
Hash: 44c0c3378df8da4899248ca77b9d8dd64016599e5742162120203280f20a909d
Previous block: 3881b3fa39c19f67a3522a0507252716c3a2b602a2d87a21fe78ff01e1e52493
Next block: 5dbad95bc64691501292992a030ddd351d919010d57ae4824a2a2ef24b20fdbb
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597897
Stripped size: 218
Size: 218
Nonce: 2
Merkle root: fedc84add8e79bc944bd1a1a210391d73f866714aa55d12a92b059e79892feb6
Median time: 1701597896
Difficulty: 4.656542373906925e-10
Confirmations: 2065
Chainwork: 0000000000000000000000000000000000000000000000000000000000000168
Bits: 207fffff