Pith Number

pith:GRPO3KL6

pith:2012:GRPO3KL65HHA37XRFE7QAPQ2E3

not attested not anchored not stored refs pending

Probing Interstellar Dust with Infrared Echoes from the Cas A Supernova

Cornelis P. Dullemond, Fr\'ed\'eric P.A. Vogt, Marc-Andr\'e Besel, Oliver Krause

arxiv:1203.1646 v1 · 2012-03-07 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GRPO3KL65HHA37XRFE7QAPQ2E3}

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	2026-05-18T03:56:59.868899Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

345eeda97ee9ce0dfef1293f003e1a26f0c8f043eee90418657dfbc5d1006aff

Aliases

arxiv: 1203.1646 · arxiv_version: 1203.1646v1 · doi: 10.48550/arxiv.1203.1646 · pith_short_12: GRPO3KL65HHA · pith_short_16: GRPO3KL65HHA37XR · pith_short_8: GRPO3KL6

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/GRPO3KL65HHA37XRFE7QAPQ2E3 \
  | 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: 345eeda97ee9ce0dfef1293f003e1a26f0c8f043eee90418657dfbc5d1006aff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4377c17dee563c48773ac13497b9ee5e55921d4bbfa8331867afa7d9c9884585",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-03-07T22:12:28Z",
    "title_canon_sha256": "93be6a683187bf857e68ef60c983ef1e5db79ccd7db1e53acf2362f8988045eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.1646",
    "kind": "arxiv",
    "version": 1
  }
}