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: 1215
Hash: 0d28787edbe6d8db7859fcfaa24692e818f292a04857bbcf0088bbb0855c66ce
Previous block: 2819381aaa71ccce91dab552821d6ee42366638a3ba9941ca16abb6c515b83ee
Next block: 21415d0d03391480a2c9f1d09c155b328beb9a5ec5c98d9646ec58b62854e087
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697610
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: a027d36aaee6f39adc35cb75b8cc8d418552b9efc5cb783b874cb36a226af893
Median time: 1718697609
Difficulty: 4.656542373906925e-10
Confirmations: 1029
Chainwork: 0000000000000000000000000000000000000000000000000000000000000980
Bits: 207fffff