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: 728
Hash: 2e0bd1bc801ac0543bab7157cbaab84b074fd777b70b6611fea3e414d797c1a9
Previous block: 2a8344df77d5069012ce65d34e22ade30e7e9211d03d6e092bb832ceb10e4fa8
Next block: 186beb815e7d1024176e7cc176ef2c500b6b937d0fee5ef4978aee3b9f4ca7c6
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864265
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: b650fe3197f44b84db6a1362e199c4782ed00559b9d3d74770d5a1b017b8a82a
Median time: 1701864264
Difficulty: 4.656542373906925e-10
Confirmations: 1516
Chainwork: 00000000000000000000000000000000000000000000000000000000000005b2
Bits: 207fffff