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.

home    blocks

Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 581
Hash: 2dfb9d0de28ce43035979e480bc056ae9e859e5f92cd87342fe372e410417429
Previous block: 6686f213a76ab85e96a56c2f5a935a7050828c6d50f3252fc466489a4e68ea9e
Next block: 430836aa9fee3ae69be602cb49c5b29eaaa46052aedbd908f5bbcc2a33239acc
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864240
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: ed4d443173ebebca7961fe615b83a6d953af8fbb90fe604aab80cee55c144b6a
Median time: 1701864239
Difficulty: 4.656542373906925e-10
Confirmations: 1663
Chainwork: 000000000000000000000000000000000000000000000000000000000000048c
Bits: 207fffff