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: 2037
Hash: 54c6f7b10bbf2754d4061b2aece89d23d46427ea09d97a76ee99f51af348fd6e
Previous block: 00cc83160d53fbd7c00f5024755305641dcce95dd0714a741aac1610e6208eb5
Next block: 79b229ca43ad27fd47ca3d10d040fcb862cabc95db592b69b738bd3eda8b937e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964776
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: c7984e4be6a7e3db1d621c4d8c55f1ef4971a28b488c655a13ece48e4bc65671
Median time: 1728964775
Difficulty: 4.656542373906925e-10
Confirmations: 207
Chainwork: 0000000000000000000000000000000000000000000000000000000000000fec
Bits: 207fffff