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: 2513
Hash: 206be4234d51bab4c323a40458395fb754509e1aacdf8c1208b278989be47382
Previous block: 6a824046af9a04a50f7ebe3bfe6d48eaf956615742a34f24e9090bdef37d6013
Next block: 373e19adf371d7cb499bd18f3e1559d5f0bc8adc24455674907df8534f124d83
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847305
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: f6ad73afbe4915f4e1196012dcff985d599cf758f2ed58fd75a125eb3d0401e8
Median time: 1743847305
Difficulty: 4.656542373906925e-10
Confirmations: 130
Chainwork: 00000000000000000000000000000000000000000000000000000000000013a4
Bits: 207fffff