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: 283
Hash: 6dec4b2d7b9c0760ad806151ae4b8d1cf1294df55fcbeb341a1a10ad7151da61
Previous block: 2beb27c9c1e1305b054d4ca1d0f60b0584a96eb1e0e48246cef4a536c0bd5efe
Next block: 0773a2dab6dfd1aab588f8c2d875abe43dd395ff3a350c76633665b7763a9b90
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597914
Stripped size: 218
Size: 218
Nonce: 2
Merkle root: 3ed9e78aa7d86602fb452be0d57a091f843579ef506f4fed2b4d5ecd0bf402e9
Median time: 1701597914
Difficulty: 4.656542373906925e-10
Confirmations: 1961
Chainwork: 0000000000000000000000000000000000000000000000000000000000000238
Bits: 207fffff