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: 319
Hash: 424739d460667ce5ae25cdd5012d3fdf6a02cb491a77928122cf716f7c13daae
Previous block: 11afa212ef4fe1f6a1bfca3f51ea05984f453a56b0eb07df5d0ccb346d6405b2
Next block: 26b7c868e0c7794706825a5f1619878429c4431462e7dd8ad0ec21866210c671
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597920
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: 06b1611347ebaea4495e6108772f0cb6aa53e1065c56ae9e7dc82ee62c7e0407
Median time: 1701597920
Difficulty: 4.656542373906925e-10
Confirmations: 1925
Chainwork: 0000000000000000000000000000000000000000000000000000000000000280
Bits: 207fffff