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: 1275
Hash: 604eaf088b2d54e2f4f15cd0abf3706e84946499afa50a84dc6ca711a5536753
Previous block: 27b15c610e6cdafcc99496c613404b92c35af97df9a79145ee09e67a07d213d8
Next block: 4c433fad7814e4645c3a7d82422377a7bbdf0c98abcc2ff691e38e55c239797d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697620
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 5a6f993143f68473ff8e5b3208b42dbdd904928ff2db0732533ec1cae9771e96
Median time: 1718697619
Difficulty: 4.656542373906925e-10
Confirmations: 969
Chainwork: 00000000000000000000000000000000000000000000000000000000000009f8
Bits: 207fffff