Pith Number

pith:Q6RPRLQG

pith:2021:Q6RPRLQG3VG5BBAL3ZDTTDNQRM

not attested not anchored not stored refs pending

The Per-Tau Shell: A Giant Star-Forming Spherical Shell Revealed by 3D Dust Observations

Alyssa Goodman, Catherine Zucker, Jo\~ao Alves, Michael M. Foley, Reimar Leike, Robert Benjamin, Shmuel Bialy, Torsten En{\ss}lin, Vadim A. Semenov

arxiv:2109.09763 v1 · 2021-09-20 · 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{Q6RPRLQG3VG5BBAL3ZDTTDNQRM}

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	2026-07-05T03:16:34.698131Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87a2f8ae06dd4dd0840bde47398db08b1e08827d80d3a3e127f6ea8006407bfa

Aliases

arxiv: 2109.09763 · arxiv_version: 2109.09763v1 · doi: 10.48550/arxiv.2109.09763 · pith_short_12: Q6RPRLQG3VG5 · pith_short_16: Q6RPRLQG3VG5BBAL · pith_short_8: Q6RPRLQG

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/Q6RPRLQG3VG5BBAL3ZDTTDNQRM \
  | 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: 87a2f8ae06dd4dd0840bde47398db08b1e08827d80d3a3e127f6ea8006407bfa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b1d2cafd0723b20cad55d198a721682841fc1a94fa1703f7c5cf8a5a2215adb6",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-09-20T18:00:12Z",
    "title_canon_sha256": "c8f376f640130b84d3c92c3aaf1c1e5218ed409adecec9c0a42f563789358ada"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.09763",
    "kind": "arxiv",
    "version": 1
  }
}