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: 563
Hash: 03f0b6979801d48d9ab150625df00188f8b12f93f05d257e412e76678304c2d4
Previous block: 7b6737df228c2798ae8b1bb0915ed7f5ec4aea5c138a4416c85c76f10f8b7c29
Next block: 56060e74e339b8fd10455ef4a04b39153facc9aec3336777cdcfb8b82a9c92b5
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864237
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 1a65b5f35981068bafa9f226b9103d080901de6a0f9cade1270347102670892b
Median time: 1701864236
Difficulty: 4.656542373906925e-10
Confirmations: 1681
Chainwork: 0000000000000000000000000000000000000000000000000000000000000468
Bits: 207fffff