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.

home    blocks

Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 247
Hash: 41b15befe84b7638c3f3923cc6a06e14b589e4f0aace6bd5591237c2bd1c35d8
Previous block: 427074fb6ccdf91eed70d5a41c8660a2614facb34842ab2cefde2f7c4152581f
Next block: 1129587641e6622ba3c9f650d8fd547948601ca8b6514ab617c94a753940299f
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597908
Stripped size: 218
Size: 218
Nonce: 2
Merkle root: 5a8912f0d84d3e001f6b9c9e92dede8841907d8ffc7d2b523dfdcca5bf22a75b
Median time: 1701597908
Difficulty: 4.656542373906925e-10
Confirmations: 1997
Chainwork: 00000000000000000000000000000000000000000000000000000000000001f0
Bits: 207fffff