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: 1903
Hash: 27b7d4052ad7dbfa126e697b28023eb7a5da62496d64951349588a2afbec7523
Previous block: 63a492530ba2fbbcf004156603c88febb58c3c67c6cd0b63652ac916432e640b
Next block: 7a606200ba5f0998bfef955d3d61d83bd266855374c7687574526a5c9bb454b9
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159240
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 39bc082ef410fa4487c5118d3e547b269128601cd92f15a5d6dcc8a83e101a54
Median time: 1719159240
Difficulty: 4.656542373906925e-10
Confirmations: 341
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ee0
Bits: 207fffff