Pith Number

pith:KQXRADO3

pith:2007:KQXRADO32WZZO4U6N7RKUUHAIS

not attested not anchored not stored refs pending

Molecular clouds in the center of M81

D. Bettoni, F. Combes, G. Galletta, V. Casasola

arxiv:0707.4234 v1 · 2007-07-28 · 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{KQXRADO32WZZO4U6N7RKUUHAIS}

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	2026-07-04T17:04:57.571188Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

542f100ddbd5b397729e6fe2aa50e044934d6ad70a6d4fe9dfce48cf8f5b78b1

Aliases

arxiv: 0707.4234 · arxiv_version: 0707.4234v1 · doi: 10.48550/arxiv.0707.4234 · pith_short_12: KQXRADO32WZZ · pith_short_16: KQXRADO32WZZO4U6 · pith_short_8: KQXRADO3

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/KQXRADO32WZZO4U6N7RKUUHAIS \
  | 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: 542f100ddbd5b397729e6fe2aa50e044934d6ad70a6d4fe9dfce48cf8f5b78b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72aa34513a3434dba2ee5ec3a1d4e5b86bfddd752d23fb3673f2438fa89f8dfc",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-07-28T11:18:08Z",
    "title_canon_sha256": "c659f4837dfb28471e1a55c8259354d7cd764453c9ac3c35c2e95311e5b5968b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0707.4234",
    "kind": "arxiv",
    "version": 1
  }
}