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: 1693
Hash: 74177601c6d222b3ff5b50d994328feffd75bfe79dded06eb68273a4d5e0541c
Previous block: 1ea8414ca5bfb8bf9a92c0665bc6630b863b8b495ac4ed2389430bfb7d4f21a8
Next block: 7e1d3750dfb4188e4726c704af67fb844fbb5730f9935a83d0af0faa0fd167e2
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159205
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 79c7cca793c9065e3b0d3a0242be15ec2db7f5302d9bd4677a76cc81d6cc8fee
Median time: 1719159205
Difficulty: 4.656542373906925e-10
Confirmations: 551
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d3c
Bits: 207fffff