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: 1243
Hash: 4886c27c66934a035d96e29c0ce154daf0f881ca92f57e02f5856a86396c0e32
Previous block: 6dd82fe8539d899c21f7410133c73f7ccafa28ba362e67807a193ecbd10ffa2c
Next block: 35397953a226dad92b245f3862312dca3669d3c3d90906e8b17b7f63e7aa1703
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697615
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: a81ac9ec27e47a468cc4556419bb3b129f8debeb4ed9631d0d6d2516c1f70015
Median time: 1718697614
Difficulty: 4.656542373906925e-10
Confirmations: 1001
Chainwork: 00000000000000000000000000000000000000000000000000000000000009b8
Bits: 207fffff