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: 1407
Hash: 4e89cfb4fcd973578a6eaea3dfe770f78df7a1d2069e440093cbb5b18b4ecd41
Previous block: 07db4119d56431be285878369442bc7c4cb8aa3be75edaad435de5201177b067
Next block: 3154ad49509a7bed6ce8eca309c4b6c55fd44b7b99596acd6dc97c377d75f3d9
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697642
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 492cb5877ff5671dd6ac38114e6cc26874afc737a0e650acb08207cf74c5342f
Median time: 1718697641
Difficulty: 4.656542373906925e-10
Confirmations: 837
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b00
Bits: 207fffff