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: 1578
Hash: 3934a8db09e61b83875037470897d1d677cf0be3508ad3a169a8daa05ea6017b
Previous block: 27397dc0986efd32a3ba471f633f0ac6adb81935f61ba09909345007bf60ab1f
Next block: 67f7423eba5bb69b5b893639f9a2a456a808ab2a36e2a40c912711f59dd37da3
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697670
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 87a97bd23cef0fb0c2d22a97399adfb32912b1bd7a012c83c8c7cda9c6469adb
Median time: 1718697670
Difficulty: 4.656542373906925e-10
Confirmations: 666
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c56
Bits: 207fffff