Pith Number

pith:VDYPPSVI

pith:2017:VDYPPSVIZFGCZPYBWYXSXCQFMS

not attested not anchored not stored refs pending

The First Optical Spectra of Wolf Rayet Stars in M101 Revealed with Gemini/GMOS

A. F. J. Moffat, D. Zurek, J. L. Pledger, K. Long, M. M. Shara, M. Wilde, P. A. Crowther

arxiv:1705.01161 v2 · 2017-05-02 · astro-ph.GA · 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{VDYPPSVIZFGCZPYBWYXSXCQFMS}

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	2026-05-18T00:32:10.414510Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8f0f7caa8c94c2cbf01b62f2b8a0564a499ef4c1af59322fe72166e2389e7ba

Aliases

arxiv: 1705.01161 · arxiv_version: 1705.01161v2 · doi: 10.48550/arxiv.1705.01161 · pith_short_12: VDYPPSVIZFGC · pith_short_16: VDYPPSVIZFGCZPYB · pith_short_8: VDYPPSVI

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/VDYPPSVIZFGCZPYBWYXSXCQFMS \
  | 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: a8f0f7caa8c94c2cbf01b62f2b8a0564a499ef4c1af59322fe72166e2389e7ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35dddbcaf43012a504073a4d011f328d0a3b581711969ff04591dc439cb467b4",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-05-02T20:03:03Z",
    "title_canon_sha256": "cb964a2b32b9e164dc89b6badb63aae68c348669d78cfa86a3916b0c674c45ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.01161",
    "kind": "arxiv",
    "version": 2
  }
}