Pith Number

pith:VVXQN35S

pith:2018:VVXQN35SBTDMG6CWCRQUU5RNL7

not attested not anchored not stored refs pending

Oxygen and silicon abundances in Cygnus OB2: Chemical homogeneity in a sample of OB slow rotators

A. Herrero, A. Pasquali, F. Comer\'on, M. Cervi\~no, S. R. Berlanas, S. Sim\'on-D\'iaz

arxiv:1809.06644 v1 · 2018-09-18 · 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{VVXQN35SBTDMG6CWCRQUU5RNL7}

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	2026-05-17T23:59:05.120705Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad6f06efb20cc6c3785614614a762d5fd6f3e39befde50a4188263a2a1c0f6f6

Aliases

arxiv: 1809.06644 · arxiv_version: 1809.06644v1 · doi: 10.48550/arxiv.1809.06644 · pith_short_12: VVXQN35SBTDM · pith_short_16: VVXQN35SBTDMG6CW · pith_short_8: VVXQN35S

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/VVXQN35SBTDMG6CWCRQUU5RNL7 \
  | 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: ad6f06efb20cc6c3785614614a762d5fd6f3e39befde50a4188263a2a1c0f6f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d22001d4b73bbb747b1e11d742aa4560e7be6602ef2675322f5ea9fefcc6149d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-09-18T11:15:28Z",
    "title_canon_sha256": "d489682797d412248db6ba2944687d381a963a920889952930c0e7933600110d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.06644",
    "kind": "arxiv",
    "version": 1
  }
}