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: 263
Hash: 228e8860f8c39c32fdb57e34d4efae855018443f6b8fe315f9c657c193c665f1
Previous block: 650e15e82a4697ce18459fe47759ead2e89e0e62a26a38e5cef843967aaa66ba
Next block: 0e255cf0b1f823cace3d2d414f41f71e3c29c38104c9adf3800061a3338e9576
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597911
Stripped size: 218
Size: 218
Nonce: 2
Merkle root: acb8cf4217085e383c058671cf564294d00a59558af5822dce363019f77873db
Median time: 1701597910
Difficulty: 4.656542373906925e-10
Confirmations: 1981
Chainwork: 0000000000000000000000000000000000000000000000000000000000000210
Bits: 207fffff