Pith Number

pith:QNG5ZP6E

pith:2008:QNG5ZP6EA5CBMS4LQUSY4H5VQ3

not attested not anchored not stored refs pending

Star-forming cores embedded in a massive cold clump: Fragmentation, collapse and energetic outflows

Dietrich Lemke, Germany), Martin Hennemann, Oliver Krause, Stephan M. Birkmann, Surhud More, Thomas Henning (MPIA Heidelberg, Yaroslav Pavlyuchenkov

arxiv:0812.2187 v1 · 2008-12-11 · 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{QNG5ZP6EA5CBMS4LQUSY4H5VQ3}

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	2026-05-18T04:29:24.589849Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

834ddcbfc40744164b8b85258e1fb586da6a09dc1eaad3038f60fe4bed8d0265

Aliases

arxiv: 0812.2187 · arxiv_version: 0812.2187v1 · doi: 10.48550/arxiv.0812.2187 · pith_short_12: QNG5ZP6EA5CB · pith_short_16: QNG5ZP6EA5CBMS4L · pith_short_8: QNG5ZP6E

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/QNG5ZP6EA5CBMS4LQUSY4H5VQ3 \
  | 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: 834ddcbfc40744164b8b85258e1fb586da6a09dc1eaad3038f60fe4bed8d0265

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7b434c6dfd4c2bbeeacc764d0beb68ad18ae637c617274002089b1c61754089",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-12-11T16:38:49Z",
    "title_canon_sha256": "61b0e1b3123b094b1dcb8a1d4cbd3d405badbccc1bcbdebfe7a46793c09d5ccd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.2187",
    "kind": "arxiv",
    "version": 1
  }
}