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: 1702
Hash: 05a56ee2b461ed966a6675595e442ffba280f9608c5acc806f14050c091f7bbb
Previous block: 06bd60dfd47ac5aea23670040e69897dd58aaa97b5d062cea9897d3731c7e67c
Next block: 0761bd24dff42f63ef8691951e310c0a8f26e7b59297a7554108cce7f675a8be
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159207
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: cfd94a1dfaeaf26df665d40b8495ccdb461af693bd93f9c081ccc3e202099e31
Median time: 1719159206
Difficulty: 4.656542373906925e-10
Confirmations: 542
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d4e
Bits: 207fffff