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: 173
Hash: 3fa06d77b28bbc869a03ad505f84ee9beac730861aedf9f320916f9781125fac
Previous block: 70dfdbe84562ce24063ba439eef80389372da4e90b148ce981db5bd1c9540fa8
Next block: 0bf7b1b4d3f79fb451ebec7e7d2b304893b349f030cae8226eecb5c69b91f642
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597896
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: 8927f655385ab392f96419801c6f90bd3afec86ba87ddc22495e5f3ab85b7ff1
Median time: 1701597895
Difficulty: 4.656542373906925e-10
Confirmations: 2071
Chainwork: 000000000000000000000000000000000000000000000000000000000000015c
Bits: 207fffff