{"action":"created","comment":{"url":"https://api.github.com/repos/ethereum/EIPs/pulls/comments/112713181","pull_request_review_id":34052001,"id":112713181,"diff_hunk":"@@ -0,0 +1,76 @@\n+## Preamble\n+\n+    EIP: <to be assigned>\n+    Title: Ethereum hierarchy for deterministic wallets\n+    Author: Nick Johnson <nick@ethereum.org>, Micah Zoltu\n+    Type: Standard Track\n+    Category : ERC\n+    Status: Draft\n+    Created: 2017-04-13\n+    Replaces: [84](https://github.com/ethereum/EIPs/issues/84)\n+\n+\n+## Abstract\n+This EIP defines a logical hierarchy for deterministic wallets based on [BIP32](https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki), the purpose scheme defined in [BIP43](https://github.com/bitcoin/bips/blob/master/bip-0043.mediawiki) and eip-draft-ethereum-purpose.\n+\n+This EIP is a particular application of eip-draft-ethereum-purpose.\n+\n+## Motivation\n+At present, different Ethereum clients and wallets use different derivation paths; a summary of them can be found [here](https://github.com/ethereum/EIPs/issues/84#issuecomment-292324521). Some of these paths violate BIP44, the standard defining derivation paths starting with `m/44'/`. This creates confusion and incompatibility between wallet implementations, in some cases making funds from one wallet inaccessible on another, and in others requiring prompting users manually for a derivation path, which hinders usability.\n+\n+Further, BIP44 was designed with UTXO-based blockchains in mind, and is a poor fit for Ethereum, which uses an accounts abstraction instead.\n+\n+As an alternative, we propose a deterministic wallet hierarchy better tailored to Ethereum's unique requiremnts.\n+\n+## Specification\n+We define the following 3 levels in BIP32 path:\n+\n+<pre>\n+m / purpose' / subpurpose' / wallet'\n+</pre>\n+\n+Apostrophe in the path indicates that BIP32 hardened derivation is used.\n+\n+Each level has a special meaning, described in the chapters below.\n+\n+### Purpose\n+\n+Purpose is a constant set to a value to be determined; the authors of this EIP are still engaged in the standards process to obtain assignment of a 'purpose' field.\n+\n+The purpose field indicates that the subtree of this node is used according to this specification.\n+\n+Hardened derivation is used at this level.\n+\n+### Subpurpose\n+Subpurpose is set to the EIP number specifying the remainder of the BIP32 derivation path. For paths following this EIP specification, the number assigned to this EIP is used.","path":"EIPS/eip-draft-hdwallets.md","position":45,"original_position":45,"commit_id":"441db8bbe774432c53c1499751c2b737b8b68efc","original_commit_id":"441db8bbe774432c53c1499751c2b737b8b68efc","user":{"login":"LefterisJP","id":1658405,"avatar_url":"https://avatars2.githubusercontent.com/u/1658405?v=3","gravatar_id":"","url":"https://api.github.com/users/LefterisJP","html_url":"https://github.com/LefterisJP","followers_url":"https://api.github.com/users/LefterisJP/followers","following_url":"https://api.github.com/users/LefterisJP/following{/other_user}","gists_url":"https://api.github.com/users/LefterisJP/gists{/gist_id}","starred_url":"https://api.github.com/users/LefterisJP/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/LefterisJP/subscriptions","organizations_url":"https://api.github.com/users/LefterisJP/orgs","repos_url":"https://api.github.com/users/LefterisJP/repos","events_url":"https://api.github.com/users/LefterisJP/events{/privacy}","received_events_url":"https://api.github.com/users/LefterisJP/received_events","type":"User","site_admin":false},"body":"Question: So the `Purpose` is going to be a constant (TBD) that generally defines this as a derivation path following a new hierarchy for Ethereum-based chains, while the `Subpurpose` will serve as the type/id of the derivation path. Or as the version?","created_at":"2017-04-21T15:21:15Z","updated_at":"2017-04-21T15:21:29Z","html_url":"https://github.com/ethereum/EIPs/pull/601#discussion_r112713181","pull_request_url":"https://api.github.com/repos/ethereum/EIPs/pulls/601","_links":{"self":{"href":"https://api.github.com/repos/ethereum/EIPs/pulls/comments/112713181"},"html":{"href":"https://github.com/ethereum/EIPs/pull/601#discussion_r112713181"},"pull_request":{"href":"https://api.github.com/repos/ethereum/EIPs/pulls/601"}}},"pull_request":{"url":"https://api.github.com/repos/ethereum/EIPs/pulls/601","id":115919362,"html_url":"https://github.com/ethereum/EIPs/pull/601","diff_url":"https://github.com/ethereum/EIPs/pull/601.diff","patch_url":"https://github.com/ethereum/EIPs/pull/601.patch","issue_url":"https://api.github.com/repos/ethereum/EIPs/issues/601","number":601,"state":"open","locked":false,"title":"Ethereum hierarchy for deterministic wallets","user":{"login":"Arachnid","id":17865,"avatar_url":"https://avatars1.githubusercontent.com/u/17865?v=3","gravatar_id":"","url":"https://api.github.com/users/Arachnid","html_url":"https://github.com/Arachnid","followers_url":"https://api.github.com/users/Arachnid/followers","following_url":"https://api.github.com/users/Arachnid/following{/other_user}","gists_url":"https://api.github.com/users/Arachnid/gists{/gist_id}","starred_url":"https://api.github.com/users/Arachnid/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Arachnid/subscriptions","organizations_url":"https://api.github.com/users/Arachnid/orgs","repos_url":"https://api.github.com/users/Arachnid/repos","events_url":"https://api.github.com/users/Arachnid/events{/privacy}","received_events_url":"https://api.github.com/users/Arachnid/received_events","type":"User","site_admin":false},"body":"This EIP defines a logical hierarchy for deterministic wallets based on 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