Problem with 'Version' field in RPC

./anon-cli getblock 0000003a94bed75b2aed697c8854785d7527d459c9ac0428bfbe2f23561fc11d

results in :

{ "hash": "0000003a94bed75b2aed697c8854785d7527d459c9ac0428bfbe2f23561fc11d", "confirmations": 1, "size": 3539, "height": 33131, "version": 536870912, "merkleroot": "ed9e374454ff5765b12bf100eb228b35d4d38674c0b7a69fefd5de59357656e5", "tx": [ "2af77275bef8fecd01eaa609771d936db13075f5de73d554935958a14f1d1660", "1f69fbc0a0ce6c1db55904071b18e9462f0d73ba899babab3f6dc706990642a4", "4f1d5a67c4fe66860a47345bb8f92afdcc172e118450c02b6334575c3294b147" ], "time": 1546269552, "nonce": "02e59cf5000000030000000000000000770b0168000000000000000068010b76", "solution": "0da7257c5137475e1f169804e7e497a58f832f8a7ed1cb62a9142739afc8b0f6e673fcbcd973c4bb075a361d11c2e7ec2a63258ba118aa954edd1b3ac3749296d92b787add688f82b97dd535ccd028396e2a436d9a251b16277dd4f0addb8f2763fcfdeb", "bits": "1d48030b", "difficulty": 59641567.01038337, "chainwork": "0000000000000000000000000000000000000000000000000000012823f68303", "anchor": "c6222012cf451310fa338e50379238f9113743e1147a9b74b56523cbdf1bfbf9", "previousblockhash": "0000000ed0ecee43d14abf2fa30e576b17bc7cff16bf6f69a74fe759ee4cd547" }

Get the hex version from RPC;

./anon-cli getblock 0000003a94bed75b2aed697c8854785d7527d459c9ac0428bfbe2f23561fc11d false 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

take the first 4 bytes (00000020) - Reverse the bytes to get the right endian format (20000000) and convert to decimal : 536870912

Same as the JSON