Pith Number

pith:DUDDQVN6

pith:2018:DUDDQVN6WODEEZAHXJD6UWQZ2O

not attested not anchored not stored refs pending

Response to comment on "An excess of massive stars in the local 30 Doradus starburst"

A. de Koter, A. Herrero, C.J. Evans, C. Norman, C. Sab\'in-Sanjuli\'an, D.J. Lennon, F. Najarro, F.R.N. Schneider, F. Tramper, G. Gr\"afener, H. Sana, J. Ma\'iz Apell\'aniz, J.M. Bestenlehner, J. Puls, J.S. Vink, J.Th. van Loon, L. Fossati, M. Garcia, M. Gieles, N. Castro, N. Langer, N. Markova, O.H. Ram\'irez-Agudelo, P.A. Crowther, Ph. Podsiadlowski, P.L. Dufton, R.G. Izzard, S.E. de Mink, S. Sim\'on-D\'iaz, V. H\'enault-Brunet, V. Kalari, W.D. Taylor

arxiv:1807.09816 v1 · 2018-07-25 · astro-ph.SR · 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{DUDDQVN6WODEEZAHXJD6UWQZ2O}

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	2026-07-05T04:45:07.882095Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d063855beb386426407ba47ea5a19d3b8068075a2c2cd239f7646e2ac4eb142

Aliases

arxiv: 1807.09816 · arxiv_version: 1807.09816v1 · doi: 10.48550/arxiv.1807.09816 · pith_short_12: DUDDQVN6WODE · pith_short_16: DUDDQVN6WODEEZAH · pith_short_8: DUDDQVN6

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/DUDDQVN6WODEEZAHXJD6UWQZ2O \
  | 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: 1d063855beb386426407ba47ea5a19d3b8068075a2c2cd239f7646e2ac4eb142

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d46457410f94c4c3bda8064f03f2233c3333a313913d2a91606944887e56962",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-07-25T18:40:48Z",
    "title_canon_sha256": "c6d1d2b7ac29f4e926914a00bec304d3139a8b1d2ebcfd92b2052d02da94afc1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.09816",
    "kind": "arxiv",
    "version": 1
  }
}