Pith Number

pith:HTQUPE3D

pith:2026:HTQUPE3DLZMMRWT2QF4PTWZ5RB

not attested not anchored not stored refs pending

$\tau$-Rec: A Verifiable Benchmark for Agentic Recommender Systems

Bharath Sivaram Narasimhan, Karthik R Narasimhan

arxiv:2606.10156 v1 · 2026-06-08 · cs.IR · cs.AI · cs.CL

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HTQUPE3DLZMMRWT2QF4PTWZ5RB}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-06-10T01:08:57.006928Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ce14793635e58c8da7a8178f9db3d88755b56814e9b2d4edb7c539c0712d9e9

Aliases

arxiv: 2606.10156 · arxiv_version: 2606.10156v1 · doi: 10.48550/arxiv.2606.10156 · pith_short_12: HTQUPE3DLZMM · pith_short_16: HTQUPE3DLZMMRWT2 · pith_short_8: HTQUPE3D

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/HTQUPE3DLZMMRWT2QF4PTWZ5RB \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 3ce14793635e58c8da7a8178f9db3d88755b56814e9b2d4edb7c539c0712d9e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf51cf5749f868c13101da6d041d5a95d9e2933b4c7bb252b5dd412aa896b837",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2026-06-08T20:35:45Z",
    "title_canon_sha256": "65b653e616eba17ddbe626d905da4b56b346cb22a6899942be11700d32acaafb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.10156",
    "kind": "arxiv",
    "version": 1
  }
}