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: 1703
Hash: 0761bd24dff42f63ef8691951e310c0a8f26e7b59297a7554108cce7f675a8be
Previous block: 05a56ee2b461ed966a6675595e442ffba280f9608c5acc806f14050c091f7bbb
Next block: 715aecab5697ca1d2ea6e81a38907fa1606927aa33c4e42b672d2d69238d1785
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159207
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 803f02d1fe8e5eb2b1e43ebe9d741d35180b4843205be06319f2ceca95f81f85
Median time: 1719159206
Difficulty: 4.656542373906925e-10
Confirmations: 541
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d50
Bits: 207fffff