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: 1590
Hash: 40db10512995df9ac64c9619a5667083ce8e4aa074103a1a39e8235ec4e165d3
Previous block: 2b8453c6926b90d9d0127ef743d9282668204eeb6855d7a881910a78e5c799b7
Next block: 3097cb1b6eeec1dc484e01207a90ed9b8410b6583be1ffc44f22d70e12077482
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697672
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: efd6a8bf5d80a34f1a19eeb50cea6ffa16c1810f54b65c81c4b5f2984aa58139
Median time: 1718697672
Difficulty: 4.656542373906925e-10
Confirmations: 654
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c6e
Bits: 207fffff