Pith Number

pith:Q7KHD6KL

pith:2011:Q7KHD6KLB7SYL5LXMP67BMYTEY

not attested not anchored not stored refs pending

SWIFT Observations of the Arp 147 Ring galaxy system

Fraser Clarke, Graeme Salter, Lisa Fogarty, Matthias Tecza, Niranjan Thatte, Roger Davies, Ryan Houghton, Susan Kassin, Timothy Goodsall

arxiv:1105.4423 v1 · 2011-05-23 · 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{Q7KHD6KLB7SYL5LXMP67BMYTEY}

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	2026-05-18T02:01:52.790533Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87d471f94b0fe585f57763fdf0b3132609a9fac5ea55e5bfd5cf3b5c847c2987

Aliases

arxiv: 1105.4423 · arxiv_version: 1105.4423v1 · doi: 10.48550/arxiv.1105.4423 · pith_short_12: Q7KHD6KLB7SY · pith_short_16: Q7KHD6KLB7SYL5LX · pith_short_8: Q7KHD6KL

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/Q7KHD6KLB7SYL5LXMP67BMYTEY \
  | 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: 87d471f94b0fe585f57763fdf0b3132609a9fac5ea55e5bfd5cf3b5c847c2987

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6fcf771d3693c1d0a143edcc683f088ffdde879cbd3c25f4236cd1eafb11e8cd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-05-23T07:48:43Z",
    "title_canon_sha256": "16b275e76f82c1bd10f0903964db5d4ed0434d3536b872f1f0ae23d81343a143"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.4423",
    "kind": "arxiv",
    "version": 1
  }
}