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: 191
Hash: 5196935e55051b4ccd5bc9e0beae63f0e4a726fed6afc2e6a39be2f75693d00b
Previous block: 30d5ee92f74917dd1eff89b96056a1911b6e61429af261711628fd65165dc3c4
Next block: 38b99f72e6a1c252d416f478a3d176712c2b8f7d0b405bd9242b93c77bf5480e
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597899
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: fe7cc6a816ac4de1fb7a75f6c8025dd62b399e26626c85902072061392e4744c
Median time: 1701597898
Difficulty: 4.656542373906925e-10
Confirmations: 2053
Chainwork: 0000000000000000000000000000000000000000000000000000000000000180
Bits: 207fffff