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: 1981
Hash: 70cb8c54e8902b4d645ebf0f182293be1a090eb69814702f45bf27c54199726a
Previous block: 0cdc8a8ea9bb8b3edc8953404e31b5d73a001d2f68ec444bc5a20e40508c47a9
Next block: 61119006013f9a302f5c41fa67aeea7fec3bc4313e9a64be8307b4046b2bfb8c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159253
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 986e9932ccaa9027f118844d39c980aab816ab5a71dcf6986f948514e2b78bc8
Median time: 1719159253
Difficulty: 4.656542373906925e-10
Confirmations: 263
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f7c
Bits: 207fffff