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: 2422
Hash: 4d560329d472f3750f602433e51464c49f7f7f0025ea5e085cf70e319dee11f9
Previous block: 5776c243ed69b11be7e36ae242a21d6c234e61f3f111159401ccff5c9eb54e40
Next block: 480cd43ffd81a2424158220e3d7ebb5003b0a5b773d9f47c51675b6da2859f68
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847290
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 0d88336089128a0057379ae24afd66f5c76c365b079001ea55077c9794fe5fb7
Median time: 1743847289
Difficulty: 4.656542373906925e-10
Confirmations: 221
Chainwork: 00000000000000000000000000000000000000000000000000000000000012ee
Bits: 207fffff