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: 1969
Hash: 2c53fb099594b28cbeae30eca1f2cf74d17e5455466405b58d2fabad7447c331
Previous block: 6aad9d4bd1b1148e145aa00d36b3fabc3a8c4e13eb8f7d65e0cba33eb496c4a8
Next block: 280e5783b37559fd53a8d5d5fd9f85ca24c7d338eaa793ca58b439868913fec3
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159251
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: dc18baebde3d0459e5ca946ec2d1f718b5bfdec0cfa824b2c36684fcbce1ca0d
Median time: 1719159251
Difficulty: 4.656542373906925e-10
Confirmations: 275
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f64
Bits: 207fffff