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: 2404
Hash: 19bb014bb4cc65063c4ff4cbf60a921b2dbd4a85e42a0a50f5d2a920cb2163bf
Previous block: 3b803b68f1077b765c2bae7c8b03321b33f262c47e5806ad648925ea48bd2d83
Next block: 6903f57f51c13e973620304f074589727a3498c70e42e5150ff9fb1a6e995901
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847287
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 778aadf6c88e53c12f908094c9db19d9f77c51ecd109441ee5089fb523a7b2c8
Median time: 1743847286
Difficulty: 4.656542373906925e-10
Confirmations: 239
Chainwork: 00000000000000000000000000000000000000000000000000000000000012ca
Bits: 207fffff