Pith Number

pith:SFWX7JG7

pith:2020:SFWX7JG7L5WG4FHKLVHZFIN6FS

not attested not anchored not stored refs pending

VLT/X-shooter spectroscopy of massive young stellar objects in the 30 Doradus region of the Large Magellanic Cloud

A. Bik, A. de Koter, E. Sabbi, G. Gr\"afener, H. Sana, J. Japelj, J. M. Bestenlehner, J. S. Vink, L. E. Ellerbroek, L. Kaper, M. C. Ram\'irez-Tannus, M.L. van Gelder, M. Sewi{\l}o, N. R. Walborn, R. H. Barb\'a, S. E. de Mink

arxiv:2002.02690 v1 · 2020-02-07 · 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{SFWX7JG7L5WG4FHKLVHZFIN6FS}

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	2026-07-05T00:57:17.481307Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

916d7fa4df5f6c6e14ea5d4f92a1be2cbeb3af6ddbdc19e955f467f2fbdb7494

Aliases

arxiv: 2002.02690 · arxiv_version: 2002.02690v1 · doi: 10.48550/arxiv.2002.02690 · pith_short_12: SFWX7JG7L5WG · pith_short_16: SFWX7JG7L5WG4FHK · pith_short_8: SFWX7JG7

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/SFWX7JG7L5WG4FHKLVHZFIN6FS \
  | 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: 916d7fa4df5f6c6e14ea5d4f92a1be2cbeb3af6ddbdc19e955f467f2fbdb7494

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78b83d092e1f0e68cf8b04c0b048457e76f698f97b251d3192eb2c1ba3e5b427",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2020-02-07T09:56:01Z",
    "title_canon_sha256": "2f6c016def47f4d63b4e6e03563fda302263d97f26645b99ef6dd97f045df49c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.02690",
    "kind": "arxiv",
    "version": 1
  }
}