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: 320
Hash: 26b7c868e0c7794706825a5f1619878429c4431462e7dd8ad0ec21866210c671
Previous block: 424739d460667ce5ae25cdd5012d3fdf6a02cb491a77928122cf716f7c13daae
Next block: 04051b7c8663569100e67d04ec670a892d4f84c2af030106f1cca53473288742
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597921
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: 27ffbcadebf875fd0e1bd3fd80b9e0371e40de74e4fe2b9b7baeb46517c9f52a
Median time: 1701597920
Difficulty: 4.656542373906925e-10
Confirmations: 1924
Chainwork: 0000000000000000000000000000000000000000000000000000000000000282
Bits: 207fffff