Pith Number

pith:5CA3VOPZ

pith:2016:5CA3VOPZSPUAP2NKKZZOPIHUVG

not attested not anchored not stored refs pending

The VLT-FLAMES Tarantula Survey XXV. Surface nitrogen abundances of O-type giants and supergiants

A. de Koter, A. Herrero, C.J. Evans, D.J. Lennon, F. Najarro, F.R.N. Schneider, F. Tramper, G. Graefener, H. Sana, I. Brott, J. Puls, J.S. Vink, J.Th. van Loon, N.J. Grin, N. Langer, N. Markova, N.R. Walborn, O.H. Ramirez-Agudelo, P.A. Crowther, P.L. Dufton, S.E. de Mink, W.D. Taylor

arxiv:1609.00197 v1 · 2016-09-01 · 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{5CA3VOPZSPUAP2NKKZZOPIHUVG}

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	2026-05-18T00:47:13.098822Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e881bab9f993e807e9aa5672e7a0f4a9b3dfe4a98120610de6446942288f0769

Aliases

arxiv: 1609.00197 · arxiv_version: 1609.00197v1 · doi: 10.48550/arxiv.1609.00197 · pith_short_12: 5CA3VOPZSPUA · pith_short_16: 5CA3VOPZSPUAP2NK · pith_short_8: 5CA3VOPZ

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/5CA3VOPZSPUAP2NKKZZOPIHUVG \
  | 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: e881bab9f993e807e9aa5672e7a0f4a9b3dfe4a98120610de6446942288f0769

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "510f730c72fd93d4606502be3c1a5e24f890a3e557d46495d9a6ee9532c2d470",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-09-01T11:52:29Z",
    "title_canon_sha256": "bcb5956013c1baeacb24617fd387d1fa82629fbecbdd6c284fb7a5222a70bcf0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.00197",
    "kind": "arxiv",
    "version": 1
  }
}