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: 750
Hash: 4d54d3a33cb1aff4ec099f20567f81f4e69de2d38b9e8dd59967a1fde92699f5
Previous block: 7944a335f2b1b1fe9501e24a0a459dc2d0573360bbec69b51663bd2c5f2e9844
Next block: 7f652f60bdb10b59048e62353edb20865e1f67dc44d235203cc9dc257534d382
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864268
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: c2251177c310ea5103313096033e1ae62ec2253edda5fbaeb885c4e6ac150334
Median time: 1701864268
Difficulty: 4.656542373906925e-10
Confirmations: 1494
Chainwork: 00000000000000000000000000000000000000000000000000000000000005de
Bits: 207fffff