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: 432
Hash: 555c6f7f57935f43a459b9b99d8627b937af948906dd8a193708836bce9f1ac9
Previous block: 6b3db51574dd509c18ac5df5f7e160b9c2f747c68a773fe2be4e50287968f19d
Next block: 4335558b07eea0bf52b9dbabe9538664dd900284d7096518caef622abfab290c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864215
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 81153eb6d8843edfcc1ba0f2424f574ca44451288765a904dd8e7e165e1f4c5f
Median time: 1701864215
Difficulty: 4.656542373906925e-10
Confirmations: 1812
Chainwork: 0000000000000000000000000000000000000000000000000000000000000362
Bits: 207fffff