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: 1879
Hash: 6e1bb4ab7d3904a2fa5c99d8c574aa9c0b23fcb5e0e95e69a5f6d5195ba5a047
Previous block: 48f26cd67c48eaedd161c398d5eca0607d24f48d62d0b5bf8e7283eaa1718055
Next block: 58c0c4082cd4771804552af10fce5566c6c658ee42696273042a7b1abd27957c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159236
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 38c33f5a102f522849fa0cbb23fadd82320a337f53c0c654eb2f49faa3e8ddf9
Median time: 1719159236
Difficulty: 4.656542373906925e-10
Confirmations: 365
Chainwork: 0000000000000000000000000000000000000000000000000000000000000eb0
Bits: 207fffff