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: 2517
Hash: 1b3b2a41ea520c7eb24b528c4dec2c743ea952a8469e4a088aed4c49bdd52aae
Previous block: 38493812e342bbe011bf9ad9043cf9ccb72e14f0522a4a43a463633fe8270a11
Next block: 538cc99ea828498ec4ca157b5bbe5ef9d69e512fd3fb4409168e0f65ca501be6
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847306
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 6b74a90eb205b0bb1925416866a826eb591b64f2475a9057896d1164290ac09a
Median time: 1743847305
Difficulty: 4.656542373906925e-10
Confirmations: 126
Chainwork: 00000000000000000000000000000000000000000000000000000000000013ac
Bits: 207fffff