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: 31
Hash: 119a16f1e3d52ad6af7d2638107aaee3860f4fc8ad66d43bba73018e0fec8c26
Previous block: 4375ad4fd80c033943e0db9d7c52077c7162e3f5ff9504b0006f828f2a31f2d0
Next block: 0e2c28bd149d74a8dab449373dc47d0d60f673b03f725e27da3cca259c93faaf
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597872
Stripped size: 217
Size: 217
Nonce: 1
Merkle root: fe1760fa88fb2327f99f5da5d5de817f9b8f6080927a01e9fdecd1c650136755
Median time: 1701597872
Difficulty: 4.656542373906925e-10
Confirmations: 2213
Chainwork: 0000000000000000000000000000000000000000000000000000000000000040
Bits: 207fffff