Pith Number

pith:EK44DJMT

pith:2013:EK44DJMTOVZ73MH463IDSO4JWW

not attested not anchored not stored refs pending

First results from a study of DIBs with thousands of high-quality massive-star spectra

A. Pellerin, A. Sota, E. J. Alfaro, J. Ma\'iz Apell\'aniz, N. I. Morrell, R. H. Barb\'a, S. Sim\'on-D\'iaz

arxiv:1305.6163 v1 · 2013-05-27 · 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{EK44DJMTOVZ73MH463IDSO4JWW}

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	2026-05-18T01:49:41.228780Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

22b9c1a5937573fdb0fcf6d0393b89b5b289dd66c4f12cac560382d9f7acb66d

Aliases

arxiv: 1305.6163 · arxiv_version: 1305.6163v1 · doi: 10.48550/arxiv.1305.6163 · pith_short_12: EK44DJMTOVZ7 · pith_short_16: EK44DJMTOVZ73MH4 · pith_short_8: EK44DJMT

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/EK44DJMTOVZ73MH463IDSO4JWW \
  | 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: 22b9c1a5937573fdb0fcf6d0393b89b5b289dd66c4f12cac560382d9f7acb66d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4fe78acca3af3ae246e20743f99879dbb095be64a5d3d43963b4d5c9199c75bf",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-05-27T10:02:49Z",
    "title_canon_sha256": "b19fb9575e5a26325a5086f0f3c4996a4b98262cfefc2b3ce54ebde5e6837096"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.6163",
    "kind": "arxiv",
    "version": 1
  }
}