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: 1694
Hash: 7e1d3750dfb4188e4726c704af67fb844fbb5730f9935a83d0af0faa0fd167e2
Previous block: 74177601c6d222b3ff5b50d994328feffd75bfe79dded06eb68273a4d5e0541c
Next block: 0951d149773a7e8c95b668aada1d2572f583f3a76724932f8038ef728ef8e16d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159206
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 2a5804daecb0267708efcfd20c9cec7e85641441f821985b2cc3d0076054f675
Median time: 1719159205
Difficulty: 4.656542373906925e-10
Confirmations: 550
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d3e
Bits: 207fffff