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: 1547
Hash: 72d086848ec934b1ae8c1c973aa6285dc23987e50fb0b54c87b0cabf3d41ca77
Previous block: 2965c1461885f99eb46dde8946e57dbdc042a609b388a4e5c3268efd43127808
Next block: 17d8d3839b6433d67cd6f757e217651e07ab20a0429a81d3b8e8508ddb487362
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697665
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: f203718546c593fa506a4fce1ebf0bd68458859fe72d03e01884889ada767b78
Median time: 1718697664
Difficulty: 4.656542373906925e-10
Confirmations: 697
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c18
Bits: 207fffff