Pith Number

pith:QACEWYLH

pith:2025:QACEWYLHPGFU4NCYXH3K6QVPMY

not attested not anchored not stored refs pending

Sandcastles in the Storm: Revisiting the (Im)possibility of Strong Watermarking

Amit Sahai, Boran Erol, Connor Choi, Fabrice Y Harel-Canada, Gary Jiarui Song, Jason Liu, Nanyun Peng

arxiv:2505.06827 v1 · 2025-05-11 · cs.CR · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QACEWYLHPGFU4NCYXH3K6QVPMY}

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	2026-07-05T11:01:37.483757Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80044b6167798b4e3458b9f6af42af662d3ca02d1a426db3eb3407c56ef141b8

Aliases

arxiv: 2505.06827 · arxiv_version: 2505.06827v1 · doi: 10.48550/arxiv.2505.06827 · pith_short_12: QACEWYLHPGFU · pith_short_16: QACEWYLHPGFU4NCY · pith_short_8: QACEWYLH

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/QACEWYLHPGFU4NCYXH3K6QVPMY \
  | 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: 80044b6167798b4e3458b9f6af42af662d3ca02d1a426db3eb3407c56ef141b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a5220e9bd7e31c50076d6e4a895a074f755c4d4036df0b2a9f8cf8835b323999",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2025-05-11T03:41:13Z",
    "title_canon_sha256": "86642db57a394ea6844c46a794f4724c1caa289115639bf947697caa5430248e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.06827",
    "kind": "arxiv",
    "version": 1
  }
}