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: 1978
Hash: 70ad54082647bf39fb7ffcdd14752dcd3621bbb8eb7f5c3e1ebf32e99a36c004
Previous block: 31386aca47a399d3e6ef1cb36458ae25ee44170e611064719bbcd01007bd4070
Next block: 211c8b05a5178f4a0ed27cd48dd2396cd7c324cf078328a84b6b42ffd5ebced7
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159253
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 59a26929f3ee6612bae41a5936f7bfc67d6e644880e2643c201d6ec959bfb4e4
Median time: 1719159252
Difficulty: 4.656542373906925e-10
Confirmations: 266
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f76
Bits: 207fffff