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: 1204
Hash: 5115216ef6e04599e8d9583f5834ee5d03671c71db855341fe31e1dd11b8e233
Previous block: 7da5ee6c9d2179cbf30a2004dbcd5a7e6f5310264d9ae2511e302f06250fd604
Next block: 5945a526225e7ed9205a83f0796ea35e143b76b5603358f2b34fca916ada4c62
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857869
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 1e263af0b5c40ac2e3e7d0cbaf50cfd58fb099e02a26d831638f9f4e2cca5dd9
Median time: 1707857868
Difficulty: 4.656542373906925e-10
Confirmations: 1040
Chainwork: 000000000000000000000000000000000000000000000000000000000000096a
Bits: 207fffff