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: 181
Hash: 0e7b6080fac5c4e733c628417ac1deb10a2e96f1cd82d5d7e6bef856a9c4c347
Previous block: 5dbad95bc64691501292992a030ddd351d919010d57ae4824a2a2ef24b20fdbb
Next block: 519ad06bd5098d11706d60496fa99877ab90a5cbb1032c73a98a0d28f5be093d
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597897
Stripped size: 218
Size: 218
Nonce: 2
Merkle root: f7ddcec4d0e37b843a4b9bd87e827fcddf6a70c0e52c118bdeb9eb144817e18d
Median time: 1701597897
Difficulty: 4.656542373906925e-10
Confirmations: 2063
Chainwork: 000000000000000000000000000000000000000000000000000000000000016c
Bits: 207fffff