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: 653
Hash: 43f7627a92732978ba28bb9dfe08531518a37115a54011269ae407684dc3861e
Previous block: 198893e56bffadd2b7fc286a57395966371357bd6b5c2078c5c19ce11b58bdeb
Next block: 460076e398401c37d1ba34e21fd64e39b5ad5ec3e03a17164d16ac76eb903bb6
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864252
Stripped size: 218
Size: 254
Nonce: 4
Merkle root: 3badb2b56d48944be21bccc294b9def2379eef264decb575ada8b13b9c647858
Median time: 1701864251
Difficulty: 4.656542373906925e-10
Confirmations: 1591
Chainwork: 000000000000000000000000000000000000000000000000000000000000051c
Bits: 207fffff