Pith Number

pith:QRBEMEXG

pith:1999:QRBEMEXGRKAU6X6MRBBXNK3XAE

not attested not anchored not stored refs pending

The Ever Changing Circumstellar Nebula Around UW Centauri

D.L. Pollacco, E. Furlan, F. Kerber, Geoffrey C. Clayton, Karl D. Gordon, Michael J. Wolff, Warrick A. Lawson

arxiv:astro-ph/9903419 v1 · 1999-03-27 · 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{QRBEMEXGRKAU6X6MRBBXNK3XAE}

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	2026-07-04T16:10:50.645745Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84424612e68a814f5fcc884376ab77011da44db0793276a1bf357d4064cf5549

Aliases

arxiv: astro-ph/9903419 · arxiv_version: astro-ph/9903419v1 · doi: 10.48550/arxiv.astro-ph/9903419 · pith_short_12: QRBEMEXGRKAU · pith_short_16: QRBEMEXGRKAU6X6M · pith_short_8: QRBEMEXG

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/QRBEMEXGRKAU6X6MRBBXNK3XAE \
  | 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: 84424612e68a814f5fcc884376ab77011da44db0793276a1bf357d4064cf5549

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d1149eae4d7ac74129314ff0f88044f4881f3e5f27f642dad4e9ef643e93363",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-03-27T10:10:09Z",
    "title_canon_sha256": "842e3fe3cafe198e5e141a0904fb58f2d4b45341fff92ecaf30fb33d95a65c96"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9903419",
    "kind": "arxiv",
    "version": 1
  }
}