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: 222
Hash: 7f08fcaaf76981403625bd87f0d02fe23411e7801413ec210be7b676794a6875
Previous block: 42303c1db81a5869938759fa0b04782c663db15fec6f831dfda34db33364ab6e
Next block: 2d9227bd37db77d74ce303a84be5a5b42fddb9ebb26fbcebe9409b42163974a3
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597904
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: a100fb2e5b942bb9776b3158cbe93f4d61f0a187ea0bb26240c7e3bcd3075fa1
Median time: 1701597903
Difficulty: 4.656542373906925e-10
Confirmations: 2022
Chainwork: 00000000000000000000000000000000000000000000000000000000000001be
Bits: 207fffff