Pith Number

pith:QR2FPQGN

pith:2017:QR2FPQGNUMCRCLI2MP65VBBBKQ

not attested not anchored not stored refs pending

Nucleus: A Pilot Project

Brian J. Cain, Joshua Finnell, Martin Klein

arxiv:1705.07862 v1 · 2017-05-22 · cs.DL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QR2FPQGNUMCRCLI2MP65VBBBKQ}

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	2026-05-18T00:44:04.384785Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

847457c0cda305112d1a63fdda84215426eb6a889f2ad4fd5614717c2bd0e99e

Aliases

arxiv: 1705.07862 · arxiv_version: 1705.07862v1 · doi: 10.48550/arxiv.1705.07862 · pith_short_12: QR2FPQGNUMCR · pith_short_16: QR2FPQGNUMCRCLI2 · pith_short_8: QR2FPQGN

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/QR2FPQGNUMCRCLI2MP65VBBBKQ \
  | 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: 847457c0cda305112d1a63fdda84215426eb6a889f2ad4fd5614717c2bd0e99e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5de38b9e757f69a5b8a668caa7660666aa9705682ad63058c4aff80ec286e047",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2017-05-22T17:09:17Z",
    "title_canon_sha256": "e446493f1a0173b848f55d167d70ab9912e59c00b5a4c43c07730fa83723a06a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.07862",
    "kind": "arxiv",
    "version": 1
  }
}