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50 lines
2.2 KiB
Markdown
50 lines
2.2 KiB
Markdown
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---
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layout: post
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title: Long Payment ID Deprecation
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summary: Announcement of the deprecation of long payment IDs
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tags: [community, crypto]
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author: dEBRUYNE / Fluffypony
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---
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Dear participants of the Monero ecosystem,
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We would like to inform you that we will be phasing out long payment
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IDs this year. Long payment IDs are detrimental to privacy and a
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source of negative user experience (as well as additional support work
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for services). Services will have to upgrade to either integrated
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addresses or subaddresses. Note, however, that there is some
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discussion about phasing out integrated addresses as well. Therefore,
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services are, to avoid having to potentially perform additional work,
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encouraged to upgrade to subaddresses directly.
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Long payment IDs will be phased out because they have several salient
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drawbacks. First, long payment IDs are detrimental to privacy insofar
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as they can potentially link the transactions of a user in case of
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reusage. Second, long payment IDs have to be attached separately to a
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transaction. This is inconsistent with conventional cryptocurrency
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transactions and therefore unintuitive for the user. As a result,
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users occasionally forget to attach the long payment ID when sending
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their transaction to a service and thus have to go through support to
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'recover' their funds. Third, it logically follows from the previous
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point that long payment IDs cause additional support work for
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services. Fourth, only one long payment ID can be attached to a
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transaction. Thus, services cannot batch withdrawals of multiple users
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specifying a long payment ID. By contrast, subaddresses have no such
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restriction and withdrawals can thus all be batched.
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In sum, payment IDs have serveral salient drawbacks and will therefore
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be phased out. Services are recommended to upgrade to subaddresses as
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soon as possible. Subaddresses essentially function similar to Bitcoin
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HD wallets and should thus be relatively straightforward to implement.
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Furthermore, subaddresses are managable from a resource point point of
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view.
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Yours sincerely,
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The Monero dev community
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Appendix:
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An upgrade process PDF that may be useful for you can be found here:
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https://github.com/monero-project/meta/files/2775745/Upgrade.Process.pdf
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