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: 1309
Hash: 66a05660030bad1196f645766f278830e5693c0019c5eabd5ba446248c95a218
Previous block: 789762b2308b3de2a9750cd7e124d5778e8ecedb45748b2b0bc061d8d7ab46a4
Next block: 7551463c28e97222305d1cc398908b474a5516bb59fddf8b729dee91fe62513b
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697626
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: a1a87bd3b7127a791fe98b95ffd11a2dba5ae1ff1125064abe71ecabae17d001
Median time: 1718697625
Difficulty: 4.656542373906925e-10
Confirmations: 935
Chainwork: 0000000000000000000000000000000000000000000000000000000000000a3c
Bits: 207fffff