Pith Number

pith:C37UBEHP

pith:2012:C37UBEHP475TCHCUP3UG3X4J25

not attested not anchored not stored refs pending

A close halo of large transparent grains around extreme red giant stars

Albert A. Zijlstra, Barnaby R. M. Norris, Foteini Lykou, Michael J. Ireland, Paul Stewart, Peter G. Tuthill, Sylvestre Lacour, Thomas M. Evans, Timothy R. Bedding

arxiv:1204.2640 v1 · 2012-04-12 · astro-ph.SR · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{C37UBEHP475TCHCUP3UG3X4J25}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T03:58:03.830338Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

16ff4090efe7fb311c547ee86ddf89d76bbdd773d11417320b18fa5791b4f8be

Aliases

arxiv: 1204.2640 · arxiv_version: 1204.2640v1 · doi: 10.48550/arxiv.1204.2640 · pith_short_12: C37UBEHP475T · pith_short_16: C37UBEHP475TCHCU · pith_short_8: C37UBEHP

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/C37UBEHP475TCHCUP3UG3X4J25 \
  | 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: 16ff4090efe7fb311c547ee86ddf89d76bbdd773d11417320b18fa5791b4f8be

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78eecee4fe72b9aee80a8a6ee984d6f3499a6311776a20fd56f68e24de2ed397",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-04-12T07:35:35Z",
    "title_canon_sha256": "2092c04c0def9eba9a8c1f568876514f14a27aa2482973922f4e12319bf583af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.2640",
    "kind": "arxiv",
    "version": 1
  }
}