Send sensitive documents to many recipients without trusting any of them — or us. Encrypt-once-address-many for legal hold, M&A data rooms, board comms, e-discovery. Post-quantum from day one.
Plaintext encrypted a single time. Each recipient unwraps their own copy of the key. No re-encryption per recipient.
Each recipient holds their own key. Revoking one recipient never touches the others.
Every unwrap is logged in the per-tenant ledger. Independently verifiable inclusion proofs.
# 1. Each recipient generates a key (or you mint one for them) curl -X POST https://app.epochcoreqcs.com/v1/vault/keys \ -d '{"algorithm":"","key_purpose":"deal-room-alpha"}' # algorithm options: see openapi.json — post-quantum KEM recommended for envelopes # 2. Seal the doc once, address it to N recipients curl -X POST https://app.epochcoreqcs.com/v1/vault/envelopes \ -d '{"payload":"deal-room-content...","recipient_key_ids":["key_a","key_b","key_c"]}' # 3. Recipient unwraps their copy curl -X POST https://app.epochcoreqcs.com/v1/vault/envelopes/env_.../unwrap \ -d '{"recipient_key_id":"key_a"}'