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: 2520
Hash: 5e9fc4cb740f330c37cb7feddde32c7f47ac70f5a7c07f68083b32b80008f122
Previous block: 54daea0e3bccc343229c897628f4f5db16cb946bca923bdd951c30f485160cff
Next block: 56ac914fcd01ca499806f389a3dbf4bfec924160b8e2b80fc083a1aab8337b31
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847307
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: c5fdfb709d095e90ccdaf8a413c1a96ac74aa8f7d1a9fa75802a7dcc6334d177
Median time: 1743847306
Difficulty: 4.656542373906925e-10
Confirmations: 123
Chainwork: 00000000000000000000000000000000000000000000000000000000000013b2
Bits: 207fffff