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: 324
Hash: 5296c4582496764cb0ae300eb09a24325a47f3c3c3e4fdfcebbeb84045359f6d
Previous block: 2fcfefd237d212cdd82ead0da5bb0275d9eed8419be0fdc954983419ef336027
Next block: 7f56653ef64ae9871cd1399b48d6bd82772482d5ea67da0a60b9d87cf7d650ec
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597921
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 027ce12df1d0cb7db65c8396b98b0c197cb7a4fb36db5023525c6f9b074eb578
Median time: 1701597920
Difficulty: 4.656542373906925e-10
Confirmations: 1920
Chainwork: 000000000000000000000000000000000000000000000000000000000000028a
Bits: 207fffff