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: 1437
Hash: 21c81b7ac73aa2244437e7dd2b96db935abd780a9cfcfde26c8618a9d676737e
Previous block: 2ffa9a962156f5743d3ec808d5093d831f94634c56f421926a602e57e8b93456
Next block: 0139ce9857a9db282cf2004df2a31d50f68bbccdfd0da632582121a2c79d3394
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697647
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: c51b1ea29daa46d730f938d77bb3af47d32e38bd9587724ce5b2bdce027ea8b9
Median time: 1718697646
Difficulty: 4.656542373906925e-10
Confirmations: 807
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b3c
Bits: 207fffff