Pith Number

pith:DK2OGYW2

pith:2017:DK2OGYW235LQL6EMO75VKPVPLN

not attested not anchored not stored refs pending

Variability of Deeply Embedded Protostars: A New Direction for Star Formation?

Doug Johnstone

arxiv:1712.02457 v1 · 2017-12-07 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DK2OGYW235LQL6EMO75VKPVPLN}

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	2026-05-18T00:28:34.085403Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ab4e362dadf5705f88c77fb553eaf5b409ad56c6a4e8d843656205111336eeb

Aliases

arxiv: 1712.02457 · arxiv_version: 1712.02457v1 · doi: 10.48550/arxiv.1712.02457 · pith_short_12: DK2OGYW235LQ · pith_short_16: DK2OGYW235LQL6EM · pith_short_8: DK2OGYW2

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/DK2OGYW235LQL6EMO75VKPVPLN \
  | 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: 1ab4e362dadf5705f88c77fb553eaf5b409ad56c6a4e8d843656205111336eeb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fd23badf561e5bc8d205a8e6a8e58f0ec6cf3dd9fd20ecceca27d50b917ce571",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-12-07T00:46:33Z",
    "title_canon_sha256": "eeedf230cf5f112beb49bddfb14d927ebb906f0a2e3ff52c224a1f391800f912"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.02457",
    "kind": "arxiv",
    "version": 1
  }
}