Pith Number

pith:MRQYAOSP

pith:2026:MRQYAOSPTQTNKM2KG66WMWSZG2

not attested not anchored not stored refs pending

Out of Sight: Compression-Aware Content Protection against Agentic Crawlers

Xuefei Wang

arxiv:2607.08180 v1 · 2026-07-09 · 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{MRQYAOSPTQTNKM2KG66WMWSZG2}

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	2026-07-10T01:19:28.948950Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6461803a4f9c26d5334a37bd665a59369188348968cd8925a2eaf49f966d0edb

Aliases

arxiv: 2607.08180 · arxiv_version: 2607.08180v1 · doi: 10.48550/arxiv.2607.08180 · pith_short_12: MRQYAOSPTQTN · pith_short_16: MRQYAOSPTQTNKM2K · pith_short_8: MRQYAOSP

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/MRQYAOSPTQTNKM2KG66WMWSZG2 \
  | 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: 6461803a4f9c26d5334a37bd665a59369188348968cd8925a2eaf49f966d0edb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ab022df9617749bb4098e26397197a628bd92139f7f9c8ad8c61d0507228ce8",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2026-07-09T07:27:48Z",
    "title_canon_sha256": "67ecbd8e3e843c9973a6d66981aec02a4a1520d7f1b731abf802862dd8ece560"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.08180",
    "kind": "arxiv",
    "version": 1
  }
}