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: 1913
Hash: 699814c8e680eca3c5cf1f4beec9629060f76a388b35af47beb46a8a226ce069
Previous block: 70d21c8d4a5ecdbf3799ac96913c13ce6f13651d754c5bc29c3b2cdf8bf2644e
Next block: 60a4546611d50ebd3ae04b4f8d75201a62ac7bdde19f952fe7a42cc768a1b7ca
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159242
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 424d802b870a315bed6631d5f4745bb75480557283f881a1d98c0a422fba44e9
Median time: 1719159241
Difficulty: 4.656542373906925e-10
Confirmations: 331
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ef4
Bits: 207fffff