Pith Number

pith:T4IZ3UPN

pith:2012:T4IZ3UPNQEZWYSYJDPVF3ANDT6

not attested not anchored not stored refs pending

A Virialized Filamentary Infrared Dark Cloud

(2) Departments of Astronomy, (3) Max-Planck-Institute for Astronomy (4) School of Physics, (6) Harvard-Smithsonian Center for Astrophysics, (7) INAF - Osservatorio Astrofisico di Arcetri), Astronomy, Audra K. Hernandez (1), Francesco Fontani (7) ((1) Department of Astronomy, Izaskun Jimenez-Serra (6), Jonathan C. Tan (2), Jouni Kainulainen (3), Michael J. Butler (5), Paola Caselli (4), Physics, University of Florida, University of Leeds (5) Department of Astronomy, University of Wisconsin-Madison

arxiv:1207.4213 v2 · 2012-07-17 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T4IZ3UPNQEZWYSYJDPVF3ANDT6}

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	2026-05-18T01:56:17.116207Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f119dd1ed81336c4b091bea5d81a39f99a48fa854aca680e25e2837010c17a2

Aliases

arxiv: 1207.4213 · arxiv_version: 1207.4213v2 · doi: 10.48550/arxiv.1207.4213 · pith_short_12: T4IZ3UPNQEZW · pith_short_16: T4IZ3UPNQEZWYSYJ · pith_short_8: T4IZ3UPN

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/T4IZ3UPNQEZWYSYJDPVF3ANDT6 \
  | 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: 9f119dd1ed81336c4b091bea5d81a39f99a48fa854aca680e25e2837010c17a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44f9b6c32eda292571f39cad30f47054e81da9378a46cef64304eab109de4098",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-07-17T20:36:51Z",
    "title_canon_sha256": "aceff8d960aa2d1896b0bb3ecdf62f046be491e53e53abed26a172dd8f29875f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.4213",
    "kind": "arxiv",
    "version": 2
  }
}