Pith Number

pith:W3CZMIY5

pith:2019:W3CZMIY534IFDR6LFM6ACAJQAM

not attested not anchored not stored refs pending

A spectrophotometric study of planetary nebulae and HII regions in the M83 galaxy

Monique M. de Brito, Oscar Cavichia

arxiv:1907.04382 v1 · 2019-07-09 · 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{W3CZMIY534IFDR6LFM6ACAJQAM}

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	2026-05-17T23:41:01.912299Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6c596231ddf1051c7cb2b3c01013003002acff2ef03d3d1a3d59f7e057f03cf

Aliases

arxiv: 1907.04382 · arxiv_version: 1907.04382v1 · doi: 10.48550/arxiv.1907.04382 · pith_short_12: W3CZMIY534IF · pith_short_16: W3CZMIY534IFDR6L · pith_short_8: W3CZMIY5

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/W3CZMIY534IFDR6LFM6ACAJQAM \
  | 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: b6c596231ddf1051c7cb2b3c01013003002acff2ef03d3d1a3d59f7e057f03cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51f025cad29b89b7f09d6c4b021f88677377b9e8f7ddc0dceae33279bb063a95",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-07-09T19:51:21Z",
    "title_canon_sha256": "acd06305c874464fa9ee75d4af1b9ac3d69f062c40b3b905a78495d31af64ea5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.04382",
    "kind": "arxiv",
    "version": 1
  }
}