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: 2531
Hash: 6a1d0d1af8d2003231b1c34535c5a1aee0843e326acd6ae579b100ef710afd26
Previous block: 2a576870576ea2abcaa3c892079893baa63b902706b19aaf8b1c031ea5488c84
Next block: 3d6745d3b1586994fac0271890060f1acf2a965ac7e34ac25fba51922ea7800d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847308
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: c81f21fdf63d92ef4b5601df25f5f3663f9161f17b65820be4e540efd8cd1ea0
Median time: 1743847308
Difficulty: 4.656542373906925e-10
Confirmations: 112
Chainwork: 00000000000000000000000000000000000000000000000000000000000013c8
Bits: 207fffff