Pith Number

pith:ZAGZPYDV

pith:2009:ZAGZPYDV42RMEXKI2BZAV3RUZY

not attested not anchored not stored refs pending

Comet C/2004 Q2 (MACHHOLZ): Parent Volatiles, a Search for Deuterated Methane, and Constraint on the CH4 Spin Temperature

Boncho P. Bonev, Erika L. Gibb, Geronimo L. Villanueva, Karen Magee-Sauer, Michael A. DiSanti, Michael J. Mumma, Richard S. Ellis

arxiv:0904.3272 v2 · 2009-04-21 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZAGZPYDV42RMEXKI2BZAV3RUZY}

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	2026-05-18T04:29:43.372534Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c80d97e075e6a2c25d48d0720aee34ce045074c04d9c23a4cca82a2eb7af64ea

Aliases

arxiv: 0904.3272 · arxiv_version: 0904.3272v2 · doi: 10.48550/arxiv.0904.3272 · pith_short_12: ZAGZPYDV42RM · pith_short_16: ZAGZPYDV42RMEXKI · pith_short_8: ZAGZPYDV

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/ZAGZPYDV42RMEXKI2BZAV3RUZY \
  | 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: c80d97e075e6a2c25d48d0720aee34ce045074c04d9c23a4cca82a2eb7af64ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fd3e06084cf73ec0a5a6da6a7f423c93ddd457e1137c59f737083392e12012d2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-04-21T15:17:31Z",
    "title_canon_sha256": "6102cda1fe2ab192a64065863ce7054ea5353f937ff83cc0da58fc87b47b5085"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.3272",
    "kind": "arxiv",
    "version": 2
  }
}