Pith Number

pith:EMR3UDEB

pith:2009:EMR3UDEB5GK3K3QKYB3GAOUJ77

not attested not anchored not stored refs pending

The chemical diversity of comets

D. Bockel\'ee-Morvan, D.C. Lis, J. Boissier, J. Crovisier, N. Biver, P. Colom

arxiv:0901.2205 v1 · 2009-01-15 · 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{EMR3UDEB5GK3K3QKYB3GAOUJ77}

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	2026-05-18T04:37:22.822684Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2323ba0c81e995b56e0ac076603a89ffd1eaade3f553bf5c8b4ad8dca401d1dd

Aliases

arxiv: 0901.2205 · arxiv_version: 0901.2205v1 · doi: 10.48550/arxiv.0901.2205 · pith_short_12: EMR3UDEB5GK3 · pith_short_16: EMR3UDEB5GK3K3QK · pith_short_8: EMR3UDEB

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/EMR3UDEB5GK3K3QKYB3GAOUJ77 \
  | 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: 2323ba0c81e995b56e0ac076603a89ffd1eaade3f553bf5c8b4ad8dca401d1dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22c4cb5fa78ad1394df25044a78388e45934f5649c00f086509c8425dd5dbfdd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-01-15T09:23:59Z",
    "title_canon_sha256": "5bfa2aca26943cf0b4af28fc5a4229bebad7ec54104b30c493af6889e1224bd8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.2205",
    "kind": "arxiv",
    "version": 1
  }
}