Pith Number

pith:PCPIFJAT

pith:2003:PCPIFJATR7R5R6ZOR2FRDWLQ4P

not attested not anchored not stored refs pending

Double $\pi^0$ Photoproduction off the Proton at Threshold

B. Krusche, D. Hornidge, D.P. Watts, I.J.D. MacGregor, J.Ahrens, J.C. McGeorge, J.G. Messchendorp, J.R.M. Annand, M. Kotulla, M. Pfeiffer, M. Rost, R. Beck, R. Novotny, R.O. Owens, S. Janssen, S. Schadmand, V. Metag

arxiv:nucl-ex/0310031 v1 · 2003-10-29 · nucl-ex · nucl-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PCPIFJATR7R5R6ZOR2FRDWLQ4P}

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	2026-05-18T01:38:17.247212Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

789e82a4138fe3d8fb2e8e8b11d970e3f620f763ff54ff10aed541414680abb4

Aliases

arxiv: nucl-ex/0310031 · arxiv_version: nucl-ex/0310031v1 · doi: 10.48550/arxiv.nucl-ex/0310031 · pith_short_12: PCPIFJATR7R5 · pith_short_16: PCPIFJATR7R5R6ZO · pith_short_8: PCPIFJAT

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/PCPIFJATR7R5R6ZOR2FRDWLQ4P \
  | 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: 789e82a4138fe3d8fb2e8e8b11d970e3f620f763ff54ff10aed541414680abb4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a605992ad9f58e410f6d950b8487550b59691154be417eaf27a30d41daf20b2f",
    "cross_cats_sorted": [
      "nucl-th"
    ],
    "license": "",
    "primary_cat": "nucl-ex",
    "submitted_at": "2003-10-29T18:43:37Z",
    "title_canon_sha256": "940305c1af1cf731ca9a33b3359d039c4d327ab5e6f4ba0298f1d03b5e3f1a52"
  },
  "schema_version": "1.0",
  "source": {
    "id": "nucl-ex/0310031",
    "kind": "arxiv",
    "version": 1
  }
}