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. mkrgsKuFE

Height: 1602
Hash: 7b219e039002f619805e61d0f81753a2ff2af88c222bb5b059f2abbd9790c6fe
Previous block: 511e16d15d8eee70303467ea01fba41582a129d20f1d4587e03f1a7590e11334
Next block: 6594e8a5b8891d3908d8221eb357da8e78c637d3aebc154dffcc33f6d8db82e3
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1708932136
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 00ce8e34784c9f04d7fe4e67a80bdab4c4c223c98100a0bc7ed321770e08485e
Median time: 1708932136
Difficulty: 4.656542373906925e-10
Confirmations: 7
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c86
Bits: 207fffff