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.

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Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 2155
Hash: 0e79e630c1926fede5e4783bf8a96f3d26d461ddc6ed98f9bd94f8ac89885539
Previous block: 51d9a4b6fece8728465b31b9d16cabb46795b0f7d5e65f24fb16c399df65adbe
Next block: 50908bf3ae354371b3a58ca59b9db242e8f1c285a42877562d1a4fe7afc60339
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964796
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 30fb9bac82202029a4cce4be18ec0f4ad393a327fa01ed9a20c6a8156f9e41ec
Median time: 1728964795
Difficulty: 4.656542373906925e-10
Confirmations: 89
Chainwork: 00000000000000000000000000000000000000000000000000000000000010d8
Bits: 207fffff