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: 2358
Hash: 18f12741925f393cf0ebf94183d1eae9d02d2abad72c353cda9f155481c805de
Previous block: 72393386543a1a427aa512295472232b42a52559c9efa613d02fa84e0dffc60a
Next block: 083d586a72adcf352644f299cab494776a23bc2264c82fff7f7782363a93ea71
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847280
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 9223a4577e7f45eace50bd20c8033fa72ca775c003af96846f3f872963596f3e
Median time: 1743847279
Difficulty: 4.656542373906925e-10
Confirmations: 285
Chainwork: 000000000000000000000000000000000000000000000000000000000000126e
Bits: 207fffff