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: 2569
Hash: 1b1acc0b4e8550d3b93552aca05f92ec7fab4611cf03886a04107a811a01ab53
Previous block: 0fbca0d85a5cb577938c2e071c8ed04e9668c471db00d1875bb7c63816918d8f
Next block: 11950293dc9a871cb2fa009d66c2568fef7f73382c9ebf3bc9f4f0d0c0e493d9
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847315
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 5d1fadd96e1359c1da99a4a3f3eec6f198d8dd06e34146ee38d341b6325ffb4d
Median time: 1743847314
Difficulty: 4.656542373906925e-10
Confirmations: 74
Chainwork: 0000000000000000000000000000000000000000000000000000000000001414
Bits: 207fffff