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: 436
Hash: 0eb4fbd160f1267014c0d9b5e19098751e4250ba6694f05e79b0294ac4df3e8c
Previous block: 1d1065981502874d3511145c8265cdf52a77e834c3a7807b804ab6d93c204715
Next block: 317bc5ae1de2b1e15711e2356ae27c8fc1b6bacc7878c2c8d99911ff49934d7c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864216
Stripped size: 218
Size: 254
Nonce: 7
Merkle root: 4e8ecafce50b8b5e9abf57dd0ebb9c2c920b798154340fa0c74551a563dd683b
Median time: 1701864215
Difficulty: 4.656542373906925e-10
Confirmations: 1808
Chainwork: 000000000000000000000000000000000000000000000000000000000000036a
Bits: 207fffff