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: 411
Hash: 1b6bafd11a46db2eebb2ac4ce2a126296673bc558f8ba3a7ea4e2094c4ae989a
Previous block: 76b9d75cf031557cb20bf386444335ceb0b12efc8ee69634bb9ff2febd179735
Next block: 7b3d09542556753752840171bde50bc9de7e555ea418c670d360b6c1f3c84fce
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701864212
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: 919cc2fa268a816a063cb1ce9b1a8f333d4080bfa86c472d7bda478381a22a5b
Median time: 1701864211
Difficulty: 4.656542373906925e-10
Confirmations: 1833
Chainwork: 0000000000000000000000000000000000000000000000000000000000000338
Bits: 207fffff