Pith Number

pith:MMAOINEI

pith:2008:MMAOINEIMB3ULAU6AEQ5HM4TQ3

not attested not anchored not stored refs pending

The 21 micron and 30 micron circumstellar dust features in evolved C-rich objects

Aigen Li (2) ((1)Beijing Normal University, Beijing, B.W. Jiang (1), China; (2)University of Missouri, Columbia, Ke Zhang (1), MO, USA)

arxiv:0812.2015 v2 · 2008-12-10 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MMAOINEIMB3ULAU6AEQ5HM4TQ3}

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	2026-05-18T02:35:13.432337Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6300e43488607745829e0121d3b39386e19de7e66440ee6f334110164f92014a

Aliases

arxiv: 0812.2015 · arxiv_version: 0812.2015v2 · doi: 10.48550/arxiv.0812.2015 · pith_short_12: MMAOINEIMB3U · pith_short_16: MMAOINEIMB3ULAU6 · pith_short_8: MMAOINEI

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/MMAOINEIMB3ULAU6AEQ5HM4TQ3 \
  | 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: 6300e43488607745829e0121d3b39386e19de7e66440ee6f334110164f92014a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e2751a00f4aaa85ee493f3bfa039f3c4f8c5e0ecfb05250476906b339dd5c58f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-12-10T20:34:57Z",
    "title_canon_sha256": "92d49c08a26234bc67df82a030ecb1143ca05810e36d08dbd7d97060ad5222ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.2015",
    "kind": "arxiv",
    "version": 2
  }
}