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: 2566
Hash: 3048f8ec798dec53810e6d53cea1b125413048312cd23dd20ae84c76abfe6361
Previous block: 3384186b6ce1fd9bba42b2e3dc093482a759e1ddad47562b6e7ecf649b1751b3
Next block: 61e530c3183e3490c557152e121c8f89a8157aa05282acf4a5d3d79e6554fcf8
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847314
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 98bc0778119bd72ec900a4538c4b0ddeec0d38e2c8249702c42816b2013c1fb5
Median time: 1743847313
Difficulty: 4.656542373906925e-10
Confirmations: 77
Chainwork: 000000000000000000000000000000000000000000000000000000000000140e
Bits: 207fffff