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: 1222
Hash: 2183a176af73bfe6cd3abbdf3a1805ac76af5c760ad71a9313a3276b750bb56c
Previous block: 65d073716efa9332868f42b70cebcf5aed647459ff0925ad667b0a3a5a331c01
Next block: 0a044d077f2132ebbf79ebafd6525d78206cf1ad206ebe82c0d6faec3afa0fb1
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697611
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 52045229791c70ac456e5ab72b6ddd61e52e0461aa62fea6c3f98aa005f8bc10
Median time: 1718697610
Difficulty: 4.656542373906925e-10
Confirmations: 1022
Chainwork: 000000000000000000000000000000000000000000000000000000000000098e
Bits: 207fffff