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: 269
Hash: 3397637122f096c0e4fd64d68eee8ab9d58c50084403371234c32fcdf0a9fbb2
Previous block: 11f8e4d6bf82775763d3def40627477dcfb5eabb7d5600ad6739c446cb3388b0
Next block: 136baab7ef7dae7c9026499c409ae7d22d04f2aa97078e36d8b0a979d432e4a7
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597912
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: e6ea98553a79bf75e8296f4db605c4965f715e5b12ce070d2e8679cbdfb980b6
Median time: 1701597911
Difficulty: 4.656542373906925e-10
Confirmations: 1975
Chainwork: 000000000000000000000000000000000000000000000000000000000000021c
Bits: 207fffff