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: 1306
Hash: 1235be842731e6f4e9c79f8cb856eff574a4b8d0f4b44a0461cb37108371a12b
Previous block: 54a69adcb4a9823df706b124393cb2d2ecc587a94a1af9ad2fbb29e32ca3e891
Next block: 6a0921bf068d6b12250808a6abdca88979135283d4387b9377b99cc075417705
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697625
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 3645bd948fb4fb06fc721c087dfaa5ed16874ff8b67ea156776d6ad4c12bfbd2
Median time: 1718697624
Difficulty: 4.656542373906925e-10
Confirmations: 938
Chainwork: 0000000000000000000000000000000000000000000000000000000000000a36
Bits: 207fffff