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: 2428
Hash: 44ff95fc1b6904eff953ea96714b0a841cf6dca5885697abe4f9e8f08e1ce8c2
Previous block: 5033f3c31d4ad73a1c725122647852efe384c8aa42608b00990cf38925c77599
Next block: 5fbc68dde038ca76da2ff2513b3487cced1c517e25ee37bc15eaba732d09a66f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847291
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: b106166082fc4ec1e368d249eaee09eecf670422e30f18f614714f1f73fe1f38
Median time: 1743847290
Difficulty: 4.656542373906925e-10
Confirmations: 215
Chainwork: 00000000000000000000000000000000000000000000000000000000000012fa
Bits: 207fffff