Pith Number

pith:YQQORWEI

pith:2019:YQQORWEILQRILJZC5RULKJDLQK

not attested not anchored not stored refs pending

An automated approach for photometry and dust mass calculation of the Crab nebula

Cyrine Nehm\'e, Marc Sauvage, Sarkis Kassounian

arxiv:1903.03389 v1 · 2019-03-08 · astro-ph.IM · astro-ph.GA · physics.space-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YQQORWEILQRILJZC5RULKJDLQK}

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	2026-05-17T23:51:45.616188Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c420e8d8885c2285a722ec68b5246b8287786fb4e062df39d9eb928b8765eff0

Aliases

arxiv: 1903.03389 · arxiv_version: 1903.03389v1 · doi: 10.48550/arxiv.1903.03389 · pith_short_12: YQQORWEILQRI · pith_short_16: YQQORWEILQRILJZC · pith_short_8: YQQORWEI

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/YQQORWEILQRILJZC5RULKJDLQK \
  | 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: c420e8d8885c2285a722ec68b5246b8287786fb4e062df39d9eb928b8765eff0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d1ed5685a1d0c4e048a5565585478f2ab926bc7dfbdb01ead7ed286c06f3484",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "physics.space-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-03-08T12:14:54Z",
    "title_canon_sha256": "89545d267749daa0e963a4abe3dc67ab1cb1afc37a9fe7be53fa849e571f5fd4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.03389",
    "kind": "arxiv",
    "version": 1
  }
}