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: 187
Hash: 1d76589da84bb06e92ba4968afb972c755d0e65c6c3ef008f6b2503e34c68ab8
Previous block: 2c4b2367da6f2bb90015aac1377448e8f6e0c3800e0edc64e77740d77118d2de
Next block: 16c3b251ca6a76960de66f0f7765e6f6f01664abe45e9e569c1ad7e9e1523351
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597898
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: 9d10a7d7b56f0412feac16a425a9d805df9f6f5bc0951c4b41d7cfb540544e24
Median time: 1701597898
Difficulty: 4.656542373906925e-10
Confirmations: 2057
Chainwork: 0000000000000000000000000000000000000000000000000000000000000178
Bits: 207fffff