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: 151
Hash: 1d1907a426b129a6fc0d6681820bfd14272066f6f7fb47972e7cba05b11d7476
Previous block: 1c811f7778c454e09f820cf278758194feab5541d559984f58a02e75513eaac7
Next block: 4bc39ecb370d534e5e42cc66728aac9de11076373154e0665631a3631176421d
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597892
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: fc6a8257a12f62c9420abda511c153d991e4014d633375651d1c1490273eb56f
Median time: 1701597892
Difficulty: 4.656542373906925e-10
Confirmations: 2093
Chainwork: 0000000000000000000000000000000000000000000000000000000000000130
Bits: 207fffff