Pith Number

pith:DIJ6NZA3

pith:2008:DIJ6NZA3MLQ5NJPYYZLHWRII7Y

not attested not anchored not stored refs pending

Properties of the Youngest Protostars in Perseus, Serpens, and Ophiuchus

Anneila I. Sargent, Jason Glenn, Melissa L. Enoch, Neal J. Evans II

arxiv:0809.4012 v1 · 2008-09-24 · 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{DIJ6NZA3MLQ5NJPYYZLHWRII7Y}

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	2026-05-18T02:35:14.701154Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1a13e6e41b62e1d6a5f8c6567b4508fe29e12d05df68bd088e94af4709a5c1e8

Aliases

arxiv: 0809.4012 · arxiv_version: 0809.4012v1 · doi: 10.48550/arxiv.0809.4012 · pith_short_12: DIJ6NZA3MLQ5 · pith_short_16: DIJ6NZA3MLQ5NJPY · pith_short_8: DIJ6NZA3

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/DIJ6NZA3MLQ5NJPYYZLHWRII7Y \
  | 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: 1a13e6e41b62e1d6a5f8c6567b4508fe29e12d05df68bd088e94af4709a5c1e8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e656065d743ad8498b1ba495935e4cb1c0717b28e157fc020132ff0fdea4e98c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-09-24T16:30:05Z",
    "title_canon_sha256": "db2aa188d9a01d0ebba91565d980f66b15deaa6c357831ca2005a2b8b90ca3d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.4012",
    "kind": "arxiv",
    "version": 1
  }
}