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: 128
Hash: 6adc9eed13776dd3b7e511a81a5e6d7bfe75be8462b8b1ad63d156bb0c1f3f6c
Previous block: 4e4530b6491345c42c4eb6bcd47a89acb503da1c4d77b680e54ff015a8002478
Next block: 24a1f5503263d0eb157706a77f0fdadb8fe8d2be8fa37d6dbbf72ead20515b83
Weight: 872
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597889
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 2b191ef511d3403d96150d874f0f0a1b2128ad8724feaa66d378c34576c63e11
Median time: 1701597888
Difficulty: 4.656542373906925e-10
Confirmations: 2116
Chainwork: 0000000000000000000000000000000000000000000000000000000000000102
Bits: 207fffff