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: 1974
Hash: 0ce6767624931b6bca6a2bb53f50987ea83d099bf23ce2beac6ce6700c3ca0c9
Previous block: 6355a36782fe4e1bc78289dd459a90575e75ff2250f930468616ec405e896a20
Next block: 589cc563863520668518196381b723e87c40ed7006b1b7a5c5c04c7b2c7b253e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159252
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 54ab2d2c64e6d8d6de9583ee6c8992874ee944809175395c042aefb51f0544c0
Median time: 1719159251
Difficulty: 4.656542373906925e-10
Confirmations: 270
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f6e
Bits: 207fffff