Pith Number

pith:BWPYZRGI

pith:2001:BWPYZRGIOQSCGP6RAOLN5GNXOS

not attested not anchored not stored refs pending

The Collins function: a simple model calculation

A. Bacchetta, A. Metz, P.J. Mulders (Vrije Universiteit Amsterdam), R. Kundu

arxiv:hep-ph/0102278 v2 · 2001-02-22 · 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{BWPYZRGIOQSCGP6RAOLN5GNXOS}

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	2026-07-04T16:27:15.068323Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d9f8cc4c87424233fd10396de99b7748bdfaff817139249d61ccdc374774ced

Aliases

arxiv: hep-ph/0102278 · arxiv_version: hep-ph/0102278v2 · doi: 10.48550/arxiv.hep-ph/0102278 · pith_short_12: BWPYZRGIOQSC · pith_short_16: BWPYZRGIOQSCGP6R · pith_short_8: BWPYZRGI

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/BWPYZRGIOQSCGP6RAOLN5GNXOS \
  | 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: 0d9f8cc4c87424233fd10396de99b7748bdfaff817139249d61ccdc374774ced

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "89234a9055b49a56909225984ec3fbb156a8a1c3507ee24730c36886e9f9c129",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "hep-ph",
    "submitted_at": "2001-02-22T17:27:38Z",
    "title_canon_sha256": "621a046e4c92c7c40a6d2a79f41c566f78cfbf69034b8aad02cfe91d253ae594"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-ph/0102278",
    "kind": "arxiv",
    "version": 2
  }
}