Pith Number

pith:PV2MA4IU

pith:2011:PV2MA4IU6VYP6FE2SBOK4D5XM7

not attested not anchored not stored refs pending

How Starless Are Starless Cores?

Doug Johnstone, James Di Francesco, Melissa Enoch, Rachel Friesen, Sarah Sadavoy, Scott Schnee

arxiv:1111.6606 v1 · 2011-11-28 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PV2MA4IU6VYP6FE2SBOK4D5XM7}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:59:22.625252Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d74c07114f570ff149a905cae0fb767fbce347505bc955d2e03042bbf5bd3ac

Aliases

arxiv: 1111.6606 · arxiv_version: 1111.6606v1 · doi: 10.48550/arxiv.1111.6606 · pith_short_12: PV2MA4IU6VYP · pith_short_16: PV2MA4IU6VYP6FE2 · pith_short_8: PV2MA4IU

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/PV2MA4IU6VYP6FE2SBOK4D5XM7 \
  | 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: 7d74c07114f570ff149a905cae0fb767fbce347505bc955d2e03042bbf5bd3ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "200d4d1b2e9fc33da64d2a9369bcd6a23bf02b6a2e546131abedab917d0a229c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-11-28T21:03:16Z",
    "title_canon_sha256": "d7408e572ba9282e68630843f6ae844de68620ba86ede239f97297b91f3c9313"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.6606",
    "kind": "arxiv",
    "version": 1
  }
}