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: 905
Hash: 2f09d33dcaf0ef46bac6eb86a6e2cad95010e8e786c711ab129c2908ad470f5c
Previous block: 4cd7a415521f8347e88471a8c84c77b3ea65ba2b13c1b8f6e6ddc9a1852deb99
Next block: 1c04cf1a91652fa8aa2c73f5a645aaf321637f92f5c95bf92a4789de1f252c7e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857819
Stripped size: 218
Size: 254
Nonce: 5
Merkle root: deaca02ab48a9953883e26455ff3091eae4f7b6b9bcd96db8dd5fc3863333b90
Median time: 1707857818
Difficulty: 4.656542373906925e-10
Confirmations: 1339
Chainwork: 0000000000000000000000000000000000000000000000000000000000000714
Bits: 207fffff