Pith Number

pith:U3ZZYYWM

pith:2026:U3ZZYYWM5AADSE4T7O2L4H4VEP

not attested not anchored not stored refs pending

SPyCE: Skill-Policy Co-evolution for Multimodal Agents

Ru Zhang, Weijie Qiu

arxiv:2607.13854 v1 · 2026-07-15 · 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{U3ZZYYWM5AADSE4T7O2L4H4VEP}

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	2026-07-16T01:23:09.950707Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6f39c62cce800391393fbb4be1f9523d7bb79301d1d4d1139ff20a2f3f2dc78

Aliases

arxiv: 2607.13854 · arxiv_version: 2607.13854v1 · doi: 10.48550/arxiv.2607.13854 · pith_short_12: U3ZZYYWM5AAD · pith_short_16: U3ZZYYWM5AADSE4T · pith_short_8: U3ZZYYWM

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/U3ZZYYWM5AADSE4T7O2L4H4VEP \
  | 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: a6f39c62cce800391393fbb4be1f9523d7bb79301d1d4d1139ff20a2f3f2dc78

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "61c64bd87c481b115e27fe52ee835443a29bd70c6d5820cff23083905725595a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-07-15T14:01:48Z",
    "title_canon_sha256": "5159e4e72d13645432812734e93cdacf7328f43274335bae6930ac13370f10b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.13854",
    "kind": "arxiv",
    "version": 1
  }
}