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: 1744
Hash: 7f89ff2083e91456c323dc26982920a96a00bcb1350216e063d20e7de50c55b9
Previous block: 78a357e6b98d84ee9d4d49cc4a1f5906c16062b85f79a64b7a0ed9548c23d86c
Next block: 158cd4490a299853445e00269f688aeac4bd1ff945f29445a0ced10f4de5d611
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159214
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: d9c6e7ef4e7b4d4f9ffb03694caa0347f76393ab413a9d16376efbee90714e6c
Median time: 1719159213
Difficulty: 4.656542373906925e-10
Confirmations: 500
Chainwork: 0000000000000000000000000000000000000000000000000000000000000da2
Bits: 207fffff