Chu Ka-Cheong
@kc
A quick technical review š§µ on AT Protocol (Bluesky) and Farcaster. Both protocols have quite similar objectives, but they have very different design. First, identity. Both want account portability where user can migrate identity to a new service provider without existing serverās cooperation (unlike Fediverse).
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Chu Ka-Cheong
@kc
Account portability is achieved by having handles that resolve into pubkeys that sign messages. Thus data can be authenticated regardless of the location. Both have 2 identifiers: a stable identifier that is not very readable (FID in FC and DID in ATP) and a readable and changeable handle (FNAME and DNS name). 2/n
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