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: 2603
Hash: 47b38f15cf6bdee95e16972b0e71c2ad4b2abff6958d1cbd62c152cbaff7fd17
Previous block: 756ecb8a7bcd20ef45692b5e6fdf3ff2a94256248556581d252bc86b7d46b024
Next block: 4534a326c79e9568b4351790290dae913e0c153793685ca5985af8bbe1b3bfd7
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847320
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 6ffe305b7ca6029ce8a439a1824f22e4f6d1a27b15537c20174a69a5428603ef
Median time: 1743847320
Difficulty: 4.656542373906925e-10
Confirmations: 40
Chainwork: 0000000000000000000000000000000000000000000000000000000000001458
Bits: 207fffff