Pith Number

pith:PKLGT6NE

pith:2026:PKLGT6NEP7WPZ6B5MYP6ZIKEVR

not attested not anchored not stored refs pending

Double Triangle Annotation: A Scalable Human-in-the-Loop Framework for High-Precision Historical Document Annotation

Yi Ren

arxiv:2605.25781 v1 · 2026-05-25 · 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{PKLGT6NEP7WPZ6B5MYP6ZIKEVR}

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	2026-05-26T02:04:54.362958Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a9669f9a47fecfcf83d661feca144ac664135aee40c6776e9b40a3df851f526

Aliases

arxiv: 2605.25781 · arxiv_version: 2605.25781v1 · doi: 10.48550/arxiv.2605.25781 · pith_short_12: PKLGT6NEP7WP · pith_short_16: PKLGT6NEP7WPZ6B5 · pith_short_8: PKLGT6NE

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/PKLGT6NEP7WPZ6B5MYP6ZIKEVR \
  | 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: 7a9669f9a47fecfcf83d661feca144ac664135aee40c6776e9b40a3df851f526

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cacdf54b67652ee7006d3cb6b82e46fc7d199a5a52ed0b6cc8d6c583f8ec30e9",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-05-25T12:29:30Z",
    "title_canon_sha256": "3634708ab3f55a27bc772222042ce9e9fec2b780b6fad624e5b904ed989ab679"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.25781",
    "kind": "arxiv",
    "version": 1
  }
}