Pith Number

pith:HBKKYIVY

pith:2009:HBKKYIVYF4CXUCYOWFXGPXRYWE

not attested not anchored not stored refs pending

Physical Properties of Dense Cores in the Rho Ophiuchi Main Cloud and A Significant Role of External Pressures in Clustered Star Formation

Fumitaka Nakamura, Hajime Maruta, Norio Ikeda, Ryoichi Nishi (Niigata Univ.), Yoshimi Kitamura (JAXA)

arxiv:0907.2558 v2 · 2009-07-15 · astro-ph.SR · astro-ph.GA

Open paper page JSON What is a Pith Number?

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

Receipt and verification

First computed	2026-05-18T02:13:02.843937Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3854ac22b82f057a0b0eb16e67de38b12517859c44fde6b46dfb0f6ba372f8c2

Aliases

arxiv: 0907.2558 · arxiv_version: 0907.2558v2 · doi: 10.48550/arxiv.0907.2558

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/HBKKYIVYF4CXUCYOWFXGPXRYWE \
  | 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: 3854ac22b82f057a0b0eb16e67de38b12517859c44fde6b46dfb0f6ba372f8c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "43d5364ba0ac70b85ecec80b4fb4fdd1666fc7bd26228c1bc197c3b2d0ec1c8e",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-07-15T11:12:18Z",
    "title_canon_sha256": "156cfbc5a33f5cfbf63f292f46b459748ae392f85fc03114f1195b1a9dfa3ad1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.2558",
    "kind": "arxiv",
    "version": 2
  }
}