public static class JPLSnapshot.JPLSnapshotAPI extends APIServlet.APIRequestHandler
The downloadJPLSnapshot API can be used to generate a genesis block JSON for a clone to satisfy the JPL 10% sharedrop requirement to existing Ignis holders.
This utility takes a snapshot of account balances and public keys on the Ignis child chain as of the specified height, scales down the balance of each account proportionately so that the total of balances of sharedrop accounts is equal to 10% of the total of all balances, and merges this data with the supplied new genesis accounts and balances. (If the total of new genesis account balances is zero, the balance of sharedrop accounts is left unchanged.)
Note that using a height more than 800 blocks in the past will normally require a blockchain rescan, which takes a few hours to complete. Do not interrupt this process.
Request parameters
Response
Input file format
The input file should contain a mapping of public keys to their initial balances, for the accounts to which the remaining 90% of the tokens will be distributed, i.e. the non-sharedrop accounts. If an existing account is included here, it will receive the specified balance in addition to the sharedrop. If no input file is provided, or the total balance of new accounts in the input file is zero, no adjustment of existing account balances is done. Here is an example input file, which allocates 300M each to the accounts with passwords "0", "1" and "2", for a total of 900M to new accounts, resulting in 100M automatically allocated to existing Ignis holders:{ "bf0ced0472d8ba3df9e21808e98e61b34404aad737e2bae1778cebc698b40f37": 30000000000000000, "39dc2e813bb45ff063a376e316b10cd0addd7306555ca0dd2890194d37960152": 30000000000000000, "011889a0988ccbed7f488878c62c020587de23ebbbae9ba56dd67fd9f432f808": 30000000000000000 }The example below, suitable to use for generating a testnet genesis block, distributes 900M tokens to 10 developers testnet accounts, and 100M to existing Ignis holders:
{ "8d84ea81a017e8d87cc3f7f908a5c3dab027f460ca131ee726216d257120656c":9000000000000000, "930d01153ba45a794a896d5fae118ee8edcddbcd860c2d3ccc5f717e8c8b433e":9000000000000000, "584486d2ba4dbd7eaeadd071f9f8c3593cee620e1e374033551147d68899b529":9000000000000000, "5962b0c12905dc5448367a676a668a076606d921497447e0f61fc329c2da1f21":9000000000000000, "cc045e5f29aaa5a8464ff3b284e6763a9a37f72cccad8f5a671a73ee61733830":9000000000000000, "a172465db52bd3f19067527e4ae05679b9b6155e1533037ea4097a56d1b56a33":9000000000000000, "622d84aacd2edf1aac0c2c068486c144ea6b0f4cb7671d4b00f7b6aa528d5b2b":9000000000000000, "5b70849aa5e480e2737dce4a439e0893e909229eeade3d2d973cf150be8dea2e":9000000000000000, "27c4fa81aaf58d41775287d86ed560b54e5426e7e9f6c686834b3eaa9f43db3b":9000000000000000, "bfbce25fe31e375c1784ef932cdd9daf8f4635e25092ea4cb60d15e220d06a1d":9000000000000000 }
Modifier and Type | Method and Description |
---|---|
protected boolean |
allowRequiredBlockParameters() |
protected boolean |
isChainSpecific() |
protected org.json.simple.JSONStreamAware |
processRequest(javax.servlet.http.HttpServletRequest request) |
protected org.json.simple.JSONStreamAware |
processRequest(javax.servlet.http.HttpServletRequest request,
javax.servlet.http.HttpServletResponse response) |
protected boolean |
requireFullClient() |
protected boolean |
requirePassword() |
protected boolean |
requirePost() |
canHaveRecipient, getAPITags, getCreateTransactionTypes, getFileParameters, getParameters, getSensitiveParameters, isIgnisOnly, isTextArea, requireBlockchain, startDbTransaction
protected org.json.simple.JSONStreamAware processRequest(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) throws NxtException
processRequest
in class APIServlet.APIRequestHandler
NxtException
protected org.json.simple.JSONStreamAware processRequest(javax.servlet.http.HttpServletRequest request)
processRequest
in class APIServlet.APIRequestHandler
protected boolean requirePost()
requirePost
in class APIServlet.APIRequestHandler
protected boolean requirePassword()
requirePassword
in class APIServlet.APIRequestHandler
protected boolean requireFullClient()
requireFullClient
in class APIServlet.APIRequestHandler
protected boolean allowRequiredBlockParameters()
allowRequiredBlockParameters
in class APIServlet.APIRequestHandler
protected boolean isChainSpecific()
isChainSpecific
in class APIServlet.APIRequestHandler