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: 507
Hash: 4219aabb71d3f9c1e93d449f355a01585aafb71016055c5a27267ea76bbf3bcf
Previous block: 65528b3d6b71177d477f2fc7518402fb61f27566c4834d89d18d5f03f67494ae
Next block: 440c7cf91650b9786b4476acccb1cb90351acb6f6d2d0d6d41624907d18cb213
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864228
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: b656bf2efa0e4f73896760f23cf3eabb4f0cedc74db4c0331d53b178db1fd498
Median time: 1701864227
Difficulty: 4.656542373906925e-10
Confirmations: 1737
Chainwork: 00000000000000000000000000000000000000000000000000000000000003f8
Bits: 207fffff