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: 1253
Hash: 5915720c13c9d66991a10dffa7399bc39b8328c60d541112114bfe76bd6bf039
Previous block: 68bea5359396f24dfca128b21d589598f47fbf30f5ead16a2084c9526bbd0af4
Next block: 5bf987c1755dc92e09dad091375ce3e42d042818476760574f2970edbb217e9c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697616
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 146c61d8c4e90864c505cebb007db335b4659cc5abe7a5e711216379039cd032
Median time: 1718697615
Difficulty: 4.656542373906925e-10
Confirmations: 991
Chainwork: 00000000000000000000000000000000000000000000000000000000000009cc
Bits: 207fffff