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: 2609
Hash: 1a82069a1b2597994d63b086e182bb80146f094923683afc0863ec1d88fefac1
Previous block: 7e489eb9bfc54cf0a1a43622843877a9d390525bc9146b8d9d872a431299e53a
Next block: 2425c22ffbbe1b2cb8eca5db3d269062e0f16a9e303955279de2cbfff87b97f2
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847321
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 453577765b4537a88abde9e4e20776f211216c3f9e07f12a24a8fb53328141f7
Median time: 1743847321
Difficulty: 4.656542373906925e-10
Confirmations: 34
Chainwork: 0000000000000000000000000000000000000000000000000000000000001464
Bits: 207fffff