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: 2397
Hash: 2691d4015f0e3b55b166e928ff7b20fdfd9104c4a3add19a4baf83143f8e97b0
Previous block: 1f37936def3a6e5f71003e208d4b5254ae2fe4079d4844d9c5374871ad94cc37
Next block: 5fa8559333dee887ad8aa9344076a4fffc2051da76e8ce9dbec97fa34c76be0d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847286
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 6c9ed46adac5afa9edc1a1be7c64ed3dddb56649a4d91ce85aafe8f848430c7c
Median time: 1743847285
Difficulty: 4.656542373906925e-10
Confirmations: 246
Chainwork: 00000000000000000000000000000000000000000000000000000000000012bc
Bits: 207fffff