Lifestream federation — mirror to BOTH AT Protocol and ActivityPub

oriz-me JSONL canonical, AT Protocol mirror under me.oriz.in.atproto AND ActivityPub outbox at me.oriz.in/activitypub/outbox. Single source, two protocols.

Lifestream federation — mirror to BOTH AT Protocol and ActivityPub

Decision

The canonical lifestream JSONL in chirag127/oriz-me-data stays the single source of truth. It is mirrored to two federated protocols, in parallel, on every cron tick:

1. AT Protocol — records published under the family lexicon me.oriz.in.atproto.lifestream.event, attributed to did:plc:... bound to the handle chirag127.oriz.in. Bluesky and any other AT Protocol consumer can subscribe. See services/business/social/atproto-firehose.md.
2. ActivityPub — Note objects published to the outbox at https://me.oriz.in/activitypub/outbox; actor at me.oriz.in/activitypub/actor. Mastodon / Pleroma / Misskey / the wider Fediverse can follow @chirag@me.oriz.in natively. See services/business/social/activitypub.md.

Both mirrors are derived data. They are idempotent on the JSONL event id. If either mirror is wiped, the next rehydrate cycle replays the canonical JSONL into it — no data is at risk.

Why

• Different audiences live on different federations. Bluesky’s network and the wider Fediverse barely overlap in 2026; an AT Protocol-only mirror leaves Mastodon followers without a feed, and the reverse leaves Bluesky followers out. Both is the only way to be reachable everywhere readers already are.
• Single canonical source preserves the 100-year strategy. No federation client becomes the source of truth — vendor / protocol format risk stays bounded by the JSONL canonical decision. If AT Protocol or ActivityPub disappears in 2046, the JSONL still parses with jq.
• Cost is zero. AT Protocol PDS is free on bsky.social or self-hostable on already-paid Workers; ActivityPub is self-hosted on the same Workers + Pages substrate. No new vendor, no card.
• Domain identity stays family-owned. chirag127.oriz.in (AT handle, DNS-bound) and @chirag@me.oriz.in (ActivityPub actor) both live on the family domain — readers’ follow relationships survive any provider swap.

Implications

Architecture

• Two mirror scripts, both reading from chirag127/oriz-me-data via the canonical-store-jsonl architecture:
  • scripts/mirror-to-atproto.ts — pushes new JSONL events as AT Protocol records.
  • scripts/mirror-to-activitypub.ts — pushes new JSONL events as ActivityPub Notes, signs with HTTP Signatures, delivers to follower inboxes.
• Both run hourly via Cloudflare Cron Triggers. Idempotent on JSONL id; repeated runs no-op.
• The Hono Worker at api.oriz.in exposes the ActivityPub actor / inbox / outbox routes mounted under me.oriz.in/activitypub/* via the cross-host umbrella per hono-worker-api-umbrella.
• WebFinger lives at me.oriz.in/.well-known/webfinger, served by the same Worker.

Identity bindings

• AT Protocol DID custody: family DID (did:plc:...), bound to handle chirag127.oriz.in via DNS TXT record at _atproto.chirag127.oriz.in. Cloudflare DNS handles the record per the DNS decision.
• ActivityPub actor key pair: RSA / Ed25519 stored in Doppler; public key embedded in the actor document; private key never leaves the Worker binding.

What gets federated

• Public-tagged events only. Per the public/private line policy and the journal-stays-auth-gated decision, journal entries are NOT federated. Age-gated content per age-gating policy is NOT federated.
• The mirror scripts read the visibility tag on each JSONL event and skip non-public events.

What we don’t do

• No origination on either federation. Posting directly into Bluesky’s web app or a Mastodon client is rejected — the JSONL must always be the origin so the canonical store stays authoritative. Replies received via either federation are fetched into the JSONL by the same cron, then re-mirrored to the other federation.
• No Nostr mirror. Deferred — covered by the AT + AP pair for now; revisit when Nostr’s reader population shifts.
• No paid hosted federation gateway (Bridgy Fed, micro.blog, Buttondown federation). Self-hosting the ActivityPub Worker is free.
• No federation of journal / age-gated / private events. Filtered at mirror time — never sent into either protocol.

Cross-refs

• AT Protocol mirror service entry
• ActivityPub mirror service entry
• social services index
• Lifestream JSONL is canonical (anchor decision)
• 100-year strategy locked
• Journal stays auth-gated
• Public/private line policy
• Hono Worker API umbrella
• Spaceship registrar + Cloudflare DNS
• Cloudflare Cron Triggers
• Doppler — secrets source-of-truth
• No card-on-file rule

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