Pith Number

pith:NPCSGBCG

pith:2010:NPCSGBCG46VADAUXUEKAUL5FWK

not attested not anchored not stored refs pending

The Morphology of the Expanding Ejecta of V2491 Cygni (2008 N.2)

D. J. Harman, I. A. Steele, J. Meaburn, M. F. Bode, M. J. Darnley, U. Munari, V. A. R. M. Ribeiro

arxiv:1011.2045 v1 · 2010-11-09 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NPCSGBCG46VADAUXUEKAUL5FWK}

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	2026-05-18T04:31:30.880770Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bc5230446e7aa018297a1140a2fa5b2b74768c44bdb13c56d6c72c65ddd6b3b

Aliases

arxiv: 1011.2045 · arxiv_version: 1011.2045v1 · doi: 10.48550/arxiv.1011.2045 · pith_short_12: NPCSGBCG46VA · pith_short_16: NPCSGBCG46VADAUX · pith_short_8: NPCSGBCG

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/NPCSGBCG46VADAUXUEKAUL5FWK \
  | 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: 6bc5230446e7aa018297a1140a2fa5b2b74768c44bdb13c56d6c72c65ddd6b3b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "432a203c6c247bd831cb3fdf5ab965dc24b68bd705a68aec94db62aa10d992f9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2010-11-09T11:22:08Z",
    "title_canon_sha256": "01a415944cd285fd3478f69533cdebb45f23c566d6abe319db40c53043efc81c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.2045",
    "kind": "arxiv",
    "version": 1
  }
}