Pith Number

pith:DA2II7CW

pith:2002:DA2II7CWBUEDIMSOEJMWRZXHJY

not attested not anchored not stored refs pending

Crossing the `Yellow Void' -- Spatially Resolved Spectroscopy of the Post- Red Supergiant IRC+10420 and Its Circumstellar Ejecta

Kris Davidson, Nathan Smith, Roberta M. Humphreys

arxiv:astro-ph/0205247 v1 · 2002-05-15 · 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{DA2II7CWBUEDIMSOEJMWRZXHJY}

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	2026-07-04T16:30:01.101020Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1834847c560d0834324e225968e6e74e2cc652793c0075d203029a07b7969922

Aliases

arxiv: astro-ph/0205247 · arxiv_version: astro-ph/0205247v1 · doi: 10.48550/arxiv.astro-ph/0205247 · pith_short_12: DA2II7CWBUED · pith_short_16: DA2II7CWBUEDIMSO · pith_short_8: DA2II7CW

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/DA2II7CWBUEDIMSOEJMWRZXHJY \
  | 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: 1834847c560d0834324e225968e6e74e2cc652793c0075d203029a07b7969922

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6548e8f7c70dd64584098f2d6c343bda7c58462583a08201268ec123ec1685e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-05-15T22:03:33Z",
    "title_canon_sha256": "83c0d3b6e162ac37a7453e3296368eb6d569754c7fa413632786500c982decd2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0205247",
    "kind": "arxiv",
    "version": 1
  }
}