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: 449
Hash: 3be112528a626b7d7832ee7f029d97edd458a170298df3d2ac4e607a0df0034a
Previous block: 65538ff703810c9a4f53899d05a53f8bd7cbcacb5bb6fa93919dd9d3e23ce97c
Next block: 187ef553ee880f107f66e765ae56d17881ce3df1c7b2e6d30b7c6cd6fe179a20
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864218
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 961c024191d150f996be9f8aa053b5129b52649c499ba3818a07e23d3c55db67
Median time: 1701864217
Difficulty: 4.656542373906925e-10
Confirmations: 1795
Chainwork: 0000000000000000000000000000000000000000000000000000000000000384
Bits: 207fffff