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: 1970
Hash: 280e5783b37559fd53a8d5d5fd9f85ca24c7d338eaa793ca58b439868913fec3
Previous block: 2c53fb099594b28cbeae30eca1f2cf74d17e5455466405b58d2fabad7447c331
Next block: 6768eda8ad69c8b5cf1f3abc7449afab2bdf6f17b840f3e234bdbadbb57d0375
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159252
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 0c613ac039b5a4d4d12c069a9338d7d2a5de44ea22002b15723348758e11901f
Median time: 1719159251
Difficulty: 4.656542373906925e-10
Confirmations: 274
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f66
Bits: 207fffff