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: 1629
Hash: 26c7b7112f10f1c61620297bb24d063fee90e72f9a82071ce8de325ed77bdf13
Previous block: 02f51545b238c41d5edd89f31b4774d735ee02e1c65110b4fb01028f00828e9e
Next block: 1e8fd93b87f3ef3645478fa7556e97956127e068ccaa86a1035576eb20209742
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159195
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: ca16e1faa4056e30aa6a126596cc9a892f815f44bfaea99660cca049a0d23d1e
Median time: 1719159194
Difficulty: 4.656542373906925e-10
Confirmations: 615
Chainwork: 0000000000000000000000000000000000000000000000000000000000000cbc
Bits: 207fffff