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.

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Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 1459
Hash: 757e068848d64906bcf9a95f6ce48bb6acd198d72bcb8f0e1576a81e0e8a87e0
Previous block: 16f76d98d4a8ab43d3c493779c4b022e016a3d2c8b7309fcce6d352e106047b8
Next block: 0928fe451d43d1e77df80ae071a9b08171dfc899b3a48a01f82f0a0ae1201a2b
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697651
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: f2642b75681359fb3be0838095bf1bc64084ec54b28e203917bb7df5265c30fc
Median time: 1718697650
Difficulty: 4.656542373906925e-10
Confirmations: 785
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b68
Bits: 207fffff