Pith Number

pith:ECU3JW5A

pith:2007:ECU3JW5AYFUYLZSAJYLJHTNVP5

not attested not anchored not stored refs pending

Constraints on $N_c$ in Extensions of the Standard Model

Robert Shrock

arxiv:0704.3464 v1 · 2007-04-26 · hep-th · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ECU3JW5AYFUYLZSAJYLJHTNVP5}

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	2026-07-04T15:31:12.943014Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20a9b4dba0c16985e6404e1693cdb57f607f5396827b344995890d5fa754353c

Aliases

arxiv: 0704.3464 · arxiv_version: 0704.3464v1 · doi: 10.48550/arxiv.0704.3464 · pith_short_12: ECU3JW5AYFUY · pith_short_16: ECU3JW5AYFUYLZSA · pith_short_8: ECU3JW5A

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/ECU3JW5AYFUYLZSAJYLJHTNVP5 \
  | 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: 20a9b4dba0c16985e6404e1693cdb57f607f5396827b344995890d5fa754353c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe809ecfc8452b2005d18eaef7cd7747dfe7f6536a1579c04011a63fa663a723",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "2007-04-26T02:03:55Z",
    "title_canon_sha256": "355942a8cbfb054d55f9b28417561c70daf0af72af4a7a6fe15e99fe79ab420a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0704.3464",
    "kind": "arxiv",
    "version": 1
  }
}