Pith Number

pith:Q5QS2GEN

pith:1999:Q5QS2GENCFTXQWJR5AGABCPH3P

not attested not anchored not stored refs pending

A Super-Alfvenic Model of Dark Clouds

AAke Nordlund (Copenhagen Obs. - DK), Paolo Padoan (INAOE - MX)

arxiv:astro-ph/9901288 v1 · 1999-01-21 · 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{Q5QS2GENCFTXQWJR5AGABCPH3P}

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.

Cited by

1 paper in Pith

Evolution of compressed clouds formed by filament coalescence. I. Oblique collisions

Receipt and verification

First computed	2026-07-04T16:10:38.336626Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87612d188d1167785931e80c0089e7dbd2846a17e82dfa8cf50c471817e2cbba

Aliases

arxiv: astro-ph/9901288 · arxiv_version: astro-ph/9901288v1 · doi: 10.48550/arxiv.astro-ph/9901288 · pith_short_12: Q5QS2GENCFTX · pith_short_16: Q5QS2GENCFTXQWJR · pith_short_8: Q5QS2GEN

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/Q5QS2GENCFTXQWJR5AGABCPH3P \
  | 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: 87612d188d1167785931e80c0089e7dbd2846a17e82dfa8cf50c471817e2cbba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "af521856c710e600854ce81228d13569b110cc815778c677ea1db05d9a1ae1e4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-01-21T04:58:15Z",
    "title_canon_sha256": "83f067183bf517088f0d43018ccfa58f679d9e7d0213081ddde5252838873b5c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9901288",
    "kind": "arxiv",
    "version": 1
  }
}