Pith Number

pith:TZI3PLJD

pith:2026:TZI3PLJDZPTP3TR3WH2VCQFTMB

not attested not anchored not stored refs pending

URSA: Chemistry-Aware Benchmark for Utilitarian Retrosynthesis Assessment

Alex Aliper, Alex Zhavoronkov, Anton Morgunov, Arkadii Lin, Bogdan Zagribelnyy, Ivan Ilin, Maksim Kuznetsov, Nikita Bondarev, Rim Shayakhmetov, Vladimir Aladinskiy

arxiv:2607.04688 v1 · 2026-07-06 · cs.LG · cs.AI · cs.CE · 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{TZI3PLJDZPTP3TR3WH2VCQFTMB}

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	2026-07-07T02:19:58.025902Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e51b7ad23cbe6fdce3bb1f55140b3604c3e2dccfe2598e34b791cd59efed101

Aliases

arxiv: 2607.04688 · arxiv_version: 2607.04688v1 · doi: 10.48550/arxiv.2607.04688 · pith_short_12: TZI3PLJDZPTP · pith_short_16: TZI3PLJDZPTP3TR3 · pith_short_8: TZI3PLJD

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/TZI3PLJDZPTP3TR3WH2VCQFTMB \
  | 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: 9e51b7ad23cbe6fdce3bb1f55140b3604c3e2dccfe2598e34b791cd59efed101

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d89406251fb985d7b4872dabb75f26a0649d9723b07102b4d5813f4dca762364",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CE",
      "cs.CL"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-07-06T05:32:09Z",
    "title_canon_sha256": "709efb279fefbef59f980c511bbcd1759f9a6584a54b7f73aca35abacebe6825"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.04688",
    "kind": "arxiv",
    "version": 1
  }
}