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: 746
Hash: 61146df06ecde9387307fce0264ce3a0ee4bab822aefd0d9c8c385fcf999ad08
Previous block: 2fe8892b93208d2f3e2627d161e227fdbb5adcec11396dbd8bc523175bda148c
Next block: 3cc8d6ce65f56729a80a8641e998c63c11a46b3ea55885c0627518b36cface4b
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864268
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 70e53020a13506a4eb3dc5700a3d5439172efd41bb528a6170713be3d89f7459
Median time: 1701864267
Difficulty: 4.656542373906925e-10
Confirmations: 1498
Chainwork: 00000000000000000000000000000000000000000000000000000000000005d6
Bits: 207fffff