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: 2357
Hash: 72393386543a1a427aa512295472232b42a52559c9efa613d02fa84e0dffc60a
Previous block: 320791b57ae4a605e6c0940a05313b4bfeba3b47b8696a6c8b20a250dc8faf7d
Next block: 18f12741925f393cf0ebf94183d1eae9d02d2abad72c353cda9f155481c805de
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847279
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 01dae610b9b9568585696424981ab7cd132d04cc9e91ac98142c26607e3fa6de
Median time: 1743847279
Difficulty: 4.656542373906925e-10
Confirmations: 286
Chainwork: 000000000000000000000000000000000000000000000000000000000000126c
Bits: 207fffff