Pith Number

pith:HTR644XY

pith:2002:HTR644XYIOSKP6BN25PWULZFT6

not attested not anchored not stored refs pending

Observation of double radiative capture on pionic hydrogen

D. H. Wright, D. S. Armstrong, J. H. D. Clark, M. A. Kovash, M. D. Hasinoff, M. E. Christy, P. A. Zolnierczuk, S. Tripathi, T. P. Gorringe

arxiv:nucl-ex/0204013 v4 · 2002-04-25 · nucl-ex

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HTR644XYIOSKP6BN25PWULZFT6}

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	2026-07-04T16:35:21.022967Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ce3ee72f843a4a7f82dd75f6a2f259f933e6c4125aecc4b565dc4c576eba8ab

Aliases

arxiv: nucl-ex/0204013 · arxiv_version: nucl-ex/0204013v4 · doi: 10.48550/arxiv.nucl-ex/0204013 · pith_short_12: HTR644XYIOSK · pith_short_16: HTR644XYIOSKP6BN · pith_short_8: HTR644XY

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/HTR644XYIOSKP6BN25PWULZFT6 \
  | 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: 3ce3ee72f843a4a7f82dd75f6a2f259f933e6c4125aecc4b565dc4c576eba8ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5b76297afab6952a79fefa700ea6a3a3ceaa94e7f538662fbeb4901f9570985e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "nucl-ex",
    "submitted_at": "2002-04-25T21:32:16Z",
    "title_canon_sha256": "8390dab6a083fc049583bb4ead984c84d91b5611ce10421ef68fb7b2483ffdf4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "nucl-ex/0204013",
    "kind": "arxiv",
    "version": 4
  }
}