Pith Number

pith:FA75MWQR

pith:2009:FA75MWQRLHB2OEQJC4QN2BSF7A

not attested not anchored not stored refs pending

Disk and Envelope Structure in Class 0 Protostars: I. The Resolved Massive Disk in Serpens FIRS 1

(2) NRAO/ALMA-JAO, (3) UT Austin, 4) ((1) UC Berkeley, (4) LAOG, Chile, France), Gaspard Duch\^ene (1, Melissa L. Enoch (1), Michael M. Dunham (3), Stuartt Corder (2)

arxiv:0910.2715 v1 · 2009-10-14 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FA75MWQRLHB2OEQJC4QN2BSF7A}

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	2026-05-18T02:34:18.771531Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

283fd65a1159c3a712091720dd0645f80c2579545b557801e8350d0f81373234

Aliases

arxiv: 0910.2715 · arxiv_version: 0910.2715v1 · doi: 10.48550/arxiv.0910.2715 · pith_short_12: FA75MWQRLHB2 · pith_short_16: FA75MWQRLHB2OEQJ · pith_short_8: FA75MWQR

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/FA75MWQRLHB2OEQJC4QN2BSF7A \
  | 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: 283fd65a1159c3a712091720dd0645f80c2579545b557801e8350d0f81373234

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e86473dd0f801fed8fc20c3f27c97ae197444d24ed5ab816f465742d2f24fe6c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-10-14T20:03:44Z",
    "title_canon_sha256": "e159fe646ce516bedcd60a3c824e7432bb3f28c5b860b452b06bd08cf075af0d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.2715",
    "kind": "arxiv",
    "version": 1
  }
}