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: 170
Hash: 074b24f869ee9c553bfc0924951075ecf9f1781c3606c4eb90f69885475a7ccc
Previous block: 2302a7707f44c299b16b88fedd2b01cacf81a64397fc61284c85a276553ae977
Next block: 6ca2ef4bd0bfcbfd5c2c9dc2f70e3bfdc65b0c94e41512e93e6aa1b0dd224f37
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597896
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 4c23f4c5afc771ccf761e141b233dc925ace47e80555d81ea4d5e9ec4a0ffaf4
Median time: 1701597895
Difficulty: 4.656542373906925e-10
Confirmations: 2074
Chainwork: 0000000000000000000000000000000000000000000000000000000000000156
Bits: 207fffff