Pith Number

pith:VCK63V3Y

pith:2017:VCK63V3YBHQ7RYD3DKV3GWOUGL

not attested not anchored not stored refs pending

Spatially resolved spectroscopy across stellar surfaces. II. High-resolution spectra across HD209458 (G0V)

Dainis Dravins, Erik Dahl\'en, Hans-G\"unter Ludwig, Hiva Pazira

arxiv:1708.01618 v1 · 2017-08-04 · astro-ph.SR · astro-ph.EP · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VCK63V3YBHQ7RYD3DKV3GWOUGL}

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	2026-05-18T00:34:46.668218Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a895edd77809e1f8e07b1aabb359d432fb003661ea2eace5618f20e02689f07b

Aliases

arxiv: 1708.01618 · arxiv_version: 1708.01618v1 · doi: 10.48550/arxiv.1708.01618 · pith_short_12: VCK63V3YBHQ7 · pith_short_16: VCK63V3YBHQ7RYD3 · pith_short_8: VCK63V3Y

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/VCK63V3YBHQ7RYD3DKV3GWOUGL \
  | 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: a895edd77809e1f8e07b1aabb359d432fb003661ea2eace5618f20e02689f07b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e155266cbf83fe6a4eda28c87f20e42f6602d49174df34c91f84d919c98109a",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2017-08-04T18:00:01Z",
    "title_canon_sha256": "f60bbb03db228f388e8b5016b82ef7e6e1263badfd9148ef922f66d653754774"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.01618",
    "kind": "arxiv",
    "version": 1
  }
}