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: 2542
Hash: 05ba1bb0fb34fdc60331bdf0783be5f5abe6a4774d8c0a714a258bcd7976e8bb
Previous block: 21e000041b29cbf4daa6e598ed9c3427ef2df7d4f349609826b3cf6f426f42c3
Next block: 0907fcf49bfd8b84a0380b3ba45b9114342a68cecef658b25359bddf6d9e743e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847310
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: a86f9502342486aef11c4389f80b22632555cac082292080694d9789b89c1294
Median time: 1743847309
Difficulty: 4.656542373906925e-10
Confirmations: 101
Chainwork: 00000000000000000000000000000000000000000000000000000000000013de
Bits: 207fffff