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. mupBAc74k

Height: 2214
Hash: 7d4ec4a4bfea6233f1add3a0f121601336d5af3a47d416ba5e3f9bd6f5856583
Previous block: 09693b59d74b2134033da76d23e66856f71324b55e2ea77fa52476941c6dd309
Next block: 01d3ef9eaf49103b251f07839f61d668a8f88c8d683bfedac90f1c88af36434b
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480978
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 1e24e106961b4738b9ded9c3cbd4ee7d8c6d697a2de279c45efa5be78508194d
Median time: 1719480977
Difficulty: 4.656542373906925e-10
Confirmations: 78
Chainwork: 000000000000000000000000000000000000000000000000000000000000114e
Bits: 207fffff