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: 1902
Hash: 63a492530ba2fbbcf004156603c88febb58c3c67c6cd0b63652ac916432e640b
Previous block: 557e71c963354c0a4defa2f50f1869b97fb9b1976df27e370d6b75992c22cbd6
Next block: 27b7d4052ad7dbfa126e697b28023eb7a5da62496d64951349588a2afbec7523
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159240
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: bca7c0d3e2b78a08aa8d21f5d6ec180aa5647ed481c4ef57fa48c1a4e60889bb
Median time: 1719159239
Difficulty: 4.656542373906925e-10
Confirmations: 342
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ede
Bits: 207fffff