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: 766
Hash: 16b0a6024c8b97f572ccb3cc9088b0d97cdaa19ec1fab42c55e754cddd3fab7e
Previous block: 51124327ac5bdc5bfa1627432e4ab37f52892ebf1c28cfc74ce7951064f0aec1
Next block: 797d12f708b3a7b46cb327f437cee320668e30762d11205fd76a8d9d754ff892
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864271
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 5fffc1672e964a1191ab9d3d805f8bd9bb329c117bbb596a948b3fa0a4c123f8
Median time: 1701864270
Difficulty: 4.656542373906925e-10
Confirmations: 1478
Chainwork: 00000000000000000000000000000000000000000000000000000000000005fe
Bits: 207fffff