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: 2574
Hash: 7dd120ec780a9242e55b1e552732933dbddcab0df454c398773428798d0ccf77
Previous block: 18cfd0d91c5787694fe07618ff8c4e2d35c1cbf503f40bb8820c3790f2159d53
Next block: 7ee0236ac2fd3ea3573a30d5aefacffa0e7f88f6c874b014684297457a94f746
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847316
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 83df89c150e2015c2cac909b0b096ef6e6cc67fe5f8cdb859ca8617545617eff
Median time: 1743847315
Difficulty: 4.656542373906925e-10
Confirmations: 69
Chainwork: 000000000000000000000000000000000000000000000000000000000000141e
Bits: 207fffff