Pith Number

pith:6LCQLXOU

pith:2023:6LCQLXOUAYF2I2VT3R4YZ6LLX3

not attested not anchored not stored refs pending

Arp 220: A Post-Starburst Galaxy With Little Star Formation Outside of It's Nuclear Disks

A. Mok, B. C. Whitmore, D. Calzetti, D. M. Elmegreen, D. O. Cook, J. C. Lee, L. Ubeda, M. Caputo, R. Chandar, R. White, S. Linden

arxiv:2301.07180 v1 · 2023-01-17 · 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{6LCQLXOUAYF2I2VT3R4YZ6LLX3}

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	2026-07-05T05:41:39.948364Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f2c505ddd4060ba46ab3dc798cf96bbedb7f46bc656b196947beee042237e406

Aliases

arxiv: 2301.07180 · arxiv_version: 2301.07180v1 · doi: 10.48550/arxiv.2301.07180 · pith_short_12: 6LCQLXOUAYF2 · pith_short_16: 6LCQLXOUAYF2I2VT · pith_short_8: 6LCQLXOU

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/6LCQLXOUAYF2I2VT3R4YZ6LLX3 \
  | 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: f2c505ddd4060ba46ab3dc798cf96bbedb7f46bc656b196947beee042237e406

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d943a5920c938001a7de585334b835fbb647196665dbf87a062256b786c8a36a",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2023-01-17T20:37:34Z",
    "title_canon_sha256": "58fba0b5ad260d31edb884dcee71ba84bafd5229213e353ae787b20e00c1d3ca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2301.07180",
    "kind": "arxiv",
    "version": 1
  }
}