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: 258
Hash: 6a3d2025cd92802f8a01be3b86ad610ec84e3bc086f179569ff4f52d8ffad6f8
Previous block: 43b891101de9b9a4a2f77383026f502390f9eb2cbfbb32b7b2fe0696befb0f58
Next block: 6af385c604714936d4d2d41e3c42b50576e24c8b38453abe43a3fa878b4c4960
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597910
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: 12ed3b22c161934d39ea946d0c51dd8a5151b9c1f90bf1106988f21173ca32c2
Median time: 1701597909
Difficulty: 4.656542373906925e-10
Confirmations: 1986
Chainwork: 0000000000000000000000000000000000000000000000000000000000000206
Bits: 207fffff