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. mupBAc74k

Height: 2277
Hash: 752aaf6902c2ac7db75b08a8f0084efd2c6d0dc3516267be91c7c37c50465ceb
Previous block: 08fe4802c59ae2b6e5402d7fdb928deed62349bbbfaed1e7dcba930354798730
Next block: 62783f0fe4b7538ae381d65468dcce30ee2433e684d91184323c0f1f6c3894fa
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480989
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: cab78c6ae6fb48d4db31e43467c524e679068a394249a92855efc33a954072fb
Median time: 1719480988
Difficulty: 4.656542373906925e-10
Confirmations: 15
Chainwork: 00000000000000000000000000000000000000000000000000000000000011cc
Bits: 207fffff