POST

Issuer Launchpad

Sign frozen release

/api/v2/launchpad/releases/{release_id}/signatures
AUTHENTICATIONBearer token · launchpad:signService ownerlaunchpad-serviceContract sourceOpenAPISTATUSProduction listed

Purpose and usage

What this endpoint does

Sign the frozen manifest with authority derived from the authenticated principal; the caller cannot nominate a signer.

When to use it

Use after verifying the frozen manifest when the authenticated principal has current derived issuer signing authority.

OUTCOME · Create or advance

What changes

Appends a signature over the exact frozen manifest; signer identity is derived and cannot be nominated by the caller.

WHY IT MATTERS

  • Gives people and agents a contract-backed way to advance sign frozen release.
  • Connects private issuer preparation to public, citation-bearing disclosure without exposing draft evidence or collapsing review, signature, finality, and availability into one state.

ISOLATION + AUTHORITY

Workspace, issuer, offering, security-class draft, Data Vault object version, requirement pack, diligence case, evidence view, reviewer decision, auditor attestation, release, signer, validator finality, replication, public index, and investor eligibility remain distinct. Launchpad cannot issue, mint, custody, sell, trade, match, settle, or authorize an investment, and its public routes expose only finalized disclosure evidence.

BEFORE YOU CALL

  • Authenticate at the documented boundary: bearer+scope.
  • Supply the required release_id (path) exactly as defined by the live contract.
  • Use one Idempotency-Key only for retries of the same byte-equivalent logical mutation.
  • Resolve the authenticated workspace and derived issuer, reviewer, auditor, signer, or publisher authority for this stage; use exact Data Vault versions and distinguish private preparation from finalized public disclosure.

WHAT TO DO NEXT

  • Re-read sign frozen release using the canonical identifier returned by this operation.
  • Reconcile an ambiguous response with the same idempotency key before attempting another mutation.
  • Follow returned canonical identifiers and commitments into the next explicit Launchpad stage, re-attesting protected evidence and re-reading release finality before public reliance.

AGENT GUIDANCE

  • Use sign frozen release only for the purpose and lifecycle stage described by this operation; do not treat it as authority for an adjacent action.
  • Supply the required release_id (path) exactly as defined by the live contract.
  • Keep draft creation, evidence linking, evidence-view pinning, review, attestation, release assembly, freeze, signature, submission, validator finality, replicated availability, indexing, and supersession as separate lifecycle facts.
  • After a timeout or conflict, read authoritative state before deciding whether an equivalent retry is safe.
Contract reference

Use the deployed OpenAPI for exact parameters, schemas and security requirements. The tables below provide integration guidance.

Open this operation in OpenAPI

Request and response

Make the request

Examples illustrate integration intent; the referenced OpenAPI operation and component schemas define the executable shape.

PARAMETERS

Headers, path, query, and body

NAMELOCATIONPRESENCETYPE / RULES / PURPOSE
AuthorizationheaderRequired

Bearer tokenCredential containing launchpad:sign authority.EXAMPLEBearer hc_live_…

release_idpathRequired

identifierStable release id selecting the exact resource addressed by this route.EXAMPLErelease-id-01

X-Request-IDheaderOptional

stringOptional caller correlation identifier. The gateway emits the effective value on the response.

Idempotency-KeyheaderRequired

ASCII string · 1–128Caller-generated stable key reused for retries of the same logical mutation.

RESPONSES

Status and payload examples

201Mutation accepted and canonical state returned.Mutation completed · JSON RESPONSE+
{}
INTEGRATION DECISION
CALLER ACTION
Accept the returned representation or receipt, then re-read sign frozen release using the canonical identifier returned by this operation.
RETRY SAFETY
Do not repeat a successful mutation merely to confirm it. For one logical mutation, retain the same Idempotency-Key and byte-equivalent request. Never reuse that key for changed instructions.
STATE RECONCILIATION
Persist returned identifiers, versions, commitments, and receipts. Refresh the offering revision, evidence commitments, review and disclosure status, readiness milestone, issuer authority, and publication or finality receipt.
401Bearer credential is missing, expired, or invalid.Authentication required · JSON RESPONSE+
{
  "code": "invalid_credentials",
  "message": "the supplied Hybrid credential is invalid"
}
INTEGRATION DECISIONinvalid_credentials
CALLER ACTION
Discard the rejected credential, complete the documented authentication or reassertion flow, and rebuild any request signature with fresh timestamps and nonces.
RETRY SAFETY
Retry only with a newly valid credential and fresh replay-protection values. For one logical mutation, retain the same Idempotency-Key and byte-equivalent request. Never reuse that key for changed instructions.
STATE RECONCILIATION
Assume the outcome is unknown only when the connection failed after transmission; otherwise authentication failed before domain work. Refresh the offering revision, evidence commitments, review and disclosure status, readiness milestone, issuer authority, and publication or finality receipt.
ESCALATE WHEN
Escalate when issuer authority, diligence evidence, disclosures, approvals, publication, or chain finality cannot be matched to one immutable revision.
403The principal lacks the required scope, role, tenant, or step-up authority.Authority or policy denied · JSON RESPONSE+
{
  "code": "invalid_credentials",
  "message": "the supplied Hybrid credential is invalid"
}
INTEGRATION DECISIONinvalid_credentials
CALLER ACTION
Verify the exact scope, tenant or workspace membership, owner boundary, step-up purpose, feature policy, and resource eligibility. Never broaden authority automatically.
RETRY SAFETY
Do not retry until the missing authority or policy condition has been deliberately resolved with least privilege.
STATE RECONCILIATION
Confirm the caller and resource resolve to the same authority boundary for issuer-private offerings, evidence, reviews, disclosures, readiness milestones, publication, and finality receipts.
ESCALATE WHEN
Escalate when issuer authority, diligence evidence, disclosures, approvals, publication, or chain finality cannot be matched to one immutable revision.
422Path, query, or body validation failed.Request must change · JSON RESPONSE+
{
  "code": "invalid_credentials",
  "message": "the supplied Hybrid credential is invalid"
}
INTEGRATION DECISIONinvalid_credentials
CALLER ACTION
Rebuild the request from the live OpenAPI operation and correct the rejected method, media type, header, parameter, or body field.
RETRY SAFETY
Do not retry the same invalid request. For one logical mutation, retain the same Idempotency-Key and byte-equivalent request. Never reuse that key for changed instructions.
STATE RECONCILIATION
Compare the submitted values with the documented constraints before another call. Refresh the offering revision, evidence commitments, review and disclosure status, readiness milestone, issuer authority, and publication or finality receipt.
ESCALATE WHEN
Escalate when issuer authority, diligence evidence, disclosures, approvals, publication, or chain finality cannot be matched to one immutable revision.
503The authoritative service or read model is unavailable.Dependency unavailable or outcome uncertain · JSON RESPONSE+
{
  "code": "invalid_credentials",
  "message": "the supplied Hybrid credential is invalid"
}
INTEGRATION DECISIONinvalid_credentials
CALLER ACTION
Preserve the exact request and treat the outcome as uncertain until authoritative state proves whether it committed.
RETRY SAFETY
Reconcile before retrying. For one logical mutation, retain the same Idempotency-Key and byte-equivalent request. Never reuse that key for changed instructions. Use bounded backoff with jitter.
STATE RECONCILIATION
Refresh the offering revision, evidence commitments, review and disclosure status, readiness milestone, issuer authority, and publication or finality receipt.
ESCALATE WHEN
Escalate when issuer authority, diligence evidence, disclosures, approvals, publication, or chain finality cannot be matched to one immutable revision.

OPERATIONAL NOTES

Security and lifecycle guarantees

  • Sign the frozen manifest with authority derived from the authenticated principal; the caller cannot nominate a signer.
  • The Rust gateway validates the public contract and routes only to the authoritative owner; clients never address internal services directly.
  • Mutations are retry-safe only when the same Idempotency-Key and canonical request body are reused.
  • The tables and examples are derived from the current gateway source OpenAPI. Re-fetch the deployed OpenAPI before execution; deployment status is shown separately on this page.
  • Only parameters present in the OpenAPI operation are accepted; undocumented query keys fail closed with HTTP 422.
Reference version and availability details

This route is implemented in canonical gateway source and appears in the production OpenAPI snapshot observed 2026-10-02T23:27:55.510Z. Authentication, tenant, feature, venue, and market policy still apply.

Verify the exact production OpenAPI operation Return to the V2 directory