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: 1975
Hash: 589cc563863520668518196381b723e87c40ed7006b1b7a5c5c04c7b2c7b253e
Previous block: 0ce6767624931b6bca6a2bb53f50987ea83d099bf23ce2beac6ce6700c3ca0c9
Next block: 5967b604bc409d05ab8ba2632131494061af22c6838d8d4a4080cd45b8062a30
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159252
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 04eb67de989a0c810a54d7a5684747948c34184ddb7863dd39b60fe3fde8b5b3
Median time: 1719159252
Difficulty: 4.656542373906925e-10
Confirmations: 269
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f70
Bits: 207fffff