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: 1663
Hash: 36b947f0e0fa61f8aeb2e85bb7b577d440b24d90b79134f3a63cb3f976ea0b8c
Previous block: 5f34af82fb8679db99e98cae4473611ccbdbe0da8c7a4ad7fa94b927e1be37f4
Next block: 0df391657deb0edc7dee6e61bf25c4d0d35696c823adb08a49f48a87c4c3ab5e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159200
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 11a7b68457377e4ee219f7e985a5daa963f74691476d42cf47bbf5142dae72cf
Median time: 1719159200
Difficulty: 4.656542373906925e-10
Confirmations: 581
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d00
Bits: 207fffff