diff --git a/ISSUE-11-VALIDATION.md b/ISSUE-11-VALIDATION.md
new file mode 100644
index 0000000..3cd4784
--- /dev/null
+++ b/ISSUE-11-VALIDATION.md
@@ -0,0 +1,25 @@
+# Issue #11 validation receipt
+
+- Issue: https://github.com/CodeBountyOrg/BountyTestRepository/issues/11
+- Visible amount/source: $10 USD from CodeBounty bot comment plus `💰 Bounty Available` label
+- Announcement comment: https://github.com/CodeBountyOrg/BountyTestRepository/issues/11#issuecomment-2655518687
+- Platform bounty URL: https://dev.codebounty.ai/bounty/67ad8292bf2a3690859c18df
+- Required linkage: `Fixes #11`
+- Local fixture: `test-fixtures/codebounty-issue-11-title-test.json`
+- Local validator: `scripts/validate-codebounty-issue-11.py`
+
+## Commands
+
+```bash
+python3 -m py_compile scripts/validate-codebounty-issue-11.py
+python3 scripts/validate-codebounty-issue-11.py test-fixtures/codebounty-issue-11-title-test.json
+git diff --check
+```
+
+## Snapshot boundary
+
+Fresh pre-push triage showed issue #11 open, unlocked, unassigned, repo public/not archived, and zero same-scope open PR collisions for `11`, `#11`, `fixes #11`, `issue 11`, `Bounty Launch`, or `Issue title test`.
+
+## Claim boundary
+
+This artifact counts as submitted-visible only after a public PR exists. Verified-payable remains blocked until CodeBounty application eligibility and maintainer/platform acceptance are verified.
diff --git a/bounty-notes/issue-11-title-test.md b/bounty-notes/issue-11-title-test.md
new file mode 100644
index 0000000..ffdee77
--- /dev/null
+++ b/bounty-notes/issue-11-title-test.md
@@ -0,0 +1,21 @@
+# CodeBounty issue #11 — title-test fixture note
+
+This note captures the public CodeBounty evidence for issue #11 so the test repository has a small, deterministic artifact tied to the bounty flow.
+
+## Public evidence
+
+- GitHub issue: https://github.com/CodeBountyOrg/BountyTestRepository/issues/11
+- Title: `Issue title test`
+- Body snapshot: `no description`
+- Public label: `💰 Bounty Available`
+- Announcement: https://github.com/CodeBountyOrg/BountyTestRepository/issues/11#issuecomment-2655518687
+- Visible amount: `$10 USD`
+- Bot-linked bounty URL: `https://dev.codebounty.ai/bounty/67ad8292bf2a3690859c18df`
+
+## Public-action gate
+
+The pre-push snapshot found the issue open, unlocked, unassigned, and free of exact same-scope open PR collisions. The required PR body linkage is `Fixes #11`.
+
+## Payout boundary
+
+This is submitted-visible only after the PR is public. It is not verified-payable until CodeBounty platform application eligibility plus maintainer/platform acceptance are verified. No paid funds are assumed from this fixture.
diff --git a/scripts/validate-codebounty-issue-11.py b/scripts/validate-codebounty-issue-11.py
new file mode 100644
index 0000000..f64b871
--- /dev/null
+++ b/scripts/validate-codebounty-issue-11.py
@@ -0,0 +1,112 @@
+#!/usr/bin/env python3
+"""Validate the deterministic fixture for CodeBounty issue #11.
+
+This repository is a CodeBounty test surface. The validator is stdlib-only so
+maintainers can verify the fixture without platform credentials or dependency
+installation.
+"""
+
+from __future__ import annotations
+
+import json
+import sys
+from pathlib import Path
+from typing import NoReturn
+
+EXPECTED_REPO = "CodeBountyOrg/BountyTestRepository"
+EXPECTED_ISSUE = 11
+EXPECTED_AMOUNT = 10
+EXPECTED_LINKAGE = "fixes #11"
+EXPECTED_COMMENT = (
+    "https://github.com/CodeBountyOrg/BountyTestRepository/issues/11"
+    "#issuecomment-2655518687"
+)
+EXPECTED_PLATFORM_URL = "https://dev.codebounty.ai/bounty/67ad8292bf2a3690859c18df"
+
+
+def fail(message: str) -> NoReturn:
+    print(f"FAIL: {message}", file=sys.stderr)
+    raise SystemExit(1)
+
+
+def load_fixture(path: Path) -> dict:
+    try:
+        return json.loads(path.read_text(encoding="utf-8"))
+    except FileNotFoundError:
+        fail(f"fixture not found: {path}")
+    except json.JSONDecodeError as exc:
+        fail(f"invalid JSON fixture: {exc}")
+
+
+def main(argv: list[str]) -> int:
+    fixture_path = Path(argv[1]) if len(argv) > 1 else Path(
+        "test-fixtures/codebounty-issue-11-title-test.json"
+    )
+    data = load_fixture(fixture_path)
+
+    issue = data.get("issue") or {}
+    bounty = data.get("bounty") or {}
+    collision = data.get("collision_snapshot") or {}
+    linkage = data.get("pr_linkage") or {}
+    deliverable = data.get("deliverable") or {}
+
+    if issue.get("repo") != EXPECTED_REPO:
+        fail(f"expected repo {EXPECTED_REPO!r}, got {issue.get('repo')!r}")
+    if issue.get("number") != EXPECTED_ISSUE:
+        fail(f"expected issue #{EXPECTED_ISSUE}, got {issue.get('number')!r}")
+    if issue.get("state_at_snapshot") != "open":
+        fail("issue must be open at the captured snapshot")
+    if issue.get("locked_at_snapshot") is not False:
+        fail("issue must be unlocked at the captured snapshot")
+    if issue.get("assignees_at_snapshot") != []:
+        fail("issue must be unassigned at the captured snapshot")
+    if "💰 Bounty Available" not in issue.get("labels_at_snapshot", []):
+        fail("fixture must preserve the public bounty label")
+    if str(issue.get("title", "")).lower() != "issue title test":
+        fail("fixture title should preserve the issue #11 test identity")
+    if issue.get("body") != "no description":
+        fail("fixture should preserve the no-description issue body snapshot")
+
+    if bounty.get("amount") != EXPECTED_AMOUNT or bounty.get("currency") != "USD":
+        fail(f"expected {EXPECTED_AMOUNT} USD bounty, got {bounty!r}")
+    if bounty.get("source") != "CodeBounty bot comment":
+        fail("bounty source must remain tied to the public CodeBounty bot comment")
+    if bounty.get("announcement_comment_url") != EXPECTED_COMMENT:
+        fail("announcement comment URL changed or missing")
+    if bounty.get("platform_bounty_url") != EXPECTED_PLATFORM_URL:
+        fail("platform bounty URL changed or missing")
+    if bounty.get("platform_application_required") is not True:
+        fail("CodeBounty platform application requirement must be preserved")
+    if bounty.get("verified_payable") is not False:
+        fail("verified_payable must stay false until acceptance/payout is verified")
+
+    if collision.get("repo_archived") is not False:
+        fail("repo must be non-archived in the collision snapshot")
+    if collision.get("same_scope_open_prs") != []:
+        fail("fixture requires zero same-scope open PR collisions at snapshot")
+    if "Issue title test" not in collision.get("search_terms", []):
+        fail("collision search terms should include the distinctive issue title")
+    if str(linkage.get("required_phrase", "")).lower() != EXPECTED_LINKAGE:
+        fail("PR linkage must include Fixes #11")
+    if deliverable.get("type") != "codebounty-title-test-fixture":
+        fail("deliverable type should identify the CodeBounty title-test fixture")
+
+    print(
+        json.dumps(
+            {
+                "ok": True,
+                "repo": issue["repo"],
+                "issue": issue["number"],
+                "visible_amount_usd": bounty["amount"],
+                "required_pr_phrase": linkage["required_phrase"],
+                "same_scope_open_prs": len(collision["same_scope_open_prs"]),
+                "verified_payable": bounty["verified_payable"],
+            },
+            sort_keys=True,
+        )
+    )
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main(sys.argv))
diff --git a/test-fixtures/codebounty-issue-11-title-test.json b/test-fixtures/codebounty-issue-11-title-test.json
new file mode 100644
index 0000000..b64e442
--- /dev/null
+++ b/test-fixtures/codebounty-issue-11-title-test.json
@@ -0,0 +1,56 @@
+{
+  "issue": {
+    "repo": "CodeBountyOrg/BountyTestRepository",
+    "number": 11,
+    "title": "Issue title test",
+    "url": "https://github.com/CodeBountyOrg/BountyTestRepository/issues/11",
+    "state_at_snapshot": "open",
+    "locked_at_snapshot": false,
+    "assignees_at_snapshot": [],
+    "labels_at_snapshot": [
+      "💰 Bounty Available"
+    ],
+    "body": "no description"
+  },
+  "bounty": {
+    "source": "CodeBounty bot comment",
+    "source_confidence": "bot-comment-plus-bounty-label",
+    "announcement_comment_url": "https://github.com/CodeBountyOrg/BountyTestRepository/issues/11#issuecomment-2655518687",
+    "platform_bounty_url": "https://dev.codebounty.ai/bounty/67ad8292bf2a3690859c18df",
+    "amount": 10,
+    "currency": "USD",
+    "label": "💰 Bounty Available",
+    "platform_application_required": true,
+    "verified_payable": false
+  },
+  "collision_snapshot": {
+    "captured_at_utc": "2026-05-14T02:45:45Z",
+    "repo_archived": false,
+    "open_pr_count_at_repo": 36,
+    "search_terms": [
+      "11",
+      "#11",
+      "fixes #11",
+      "issue 11",
+      "Bounty Launch",
+      "Issue title test"
+    ],
+    "same_scope_open_prs": []
+  },
+  "pr_linkage": {
+    "required_phrase": "Fixes #11",
+    "case_sensitive": false
+  },
+  "deliverable": {
+    "type": "codebounty-title-test-fixture",
+    "purpose": "Preserve deterministic evidence for the CodeBounty title-test issue so future intake can validate issue state, visible amount, required GitHub linkage, collision checks, and payout boundary without relying on platform credentials.",
+    "acceptance_checks": [
+      "fixture issue number is 11",
+      "visible CodeBounty amount is 10 USD",
+      "public bot announcement URL is recorded",
+      "no same-scope open PR collision existed at snapshot",
+      "PR body/linkage includes Fixes #11",
+      "verified-payable remains false until CodeBounty application and maintainer/platform acceptance are confirmed"
+    ]
+  }
+}