Pith Number

pith:OV5M63OT

pith:2004:OV5M63OTQHR6QDR7WO5J7VWWSZ

not attested not anchored not stored refs pending

Far-infrared and sub-mm observations of the Crab nebula

C. C. Popescu, D. A. Green, R. J. Tuffs

arxiv:astro-ph/0409469 v1 · 2004-09-20 · astro-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{OV5M63OTQHR6QDR7WO5J7VWWSZ}

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	2026-07-04T14:13:45.820583Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

757acf6dd381e3e80e3fb3ba9fd6d69677ab0811aae65ec56816ee7072594ab0

Aliases

arxiv: astro-ph/0409469 · arxiv_version: astro-ph/0409469v1 · doi: 10.48550/arxiv.astro-ph/0409469 · pith_short_12: OV5M63OTQHR6 · pith_short_16: OV5M63OTQHR6QDR7 · pith_short_8: OV5M63OT

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/OV5M63OTQHR6QDR7WO5J7VWWSZ \
  | 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: 757acf6dd381e3e80e3fb3ba9fd6d69677ab0811aae65ec56816ee7072594ab0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "245d309240e278b16c0bb87d110b545acbcfd851297ead8dbfdd57976b21bf40",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-09-20T17:57:58Z",
    "title_canon_sha256": "70b8ef00f4687422846405f8ba24ecebef5f3830ba0ddfebf9bab874e094656e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0409469",
    "kind": "arxiv",
    "version": 1
  }
}