Pith Number

pith:WY2BYS5O

pith:2012:WY2BYS5OZGVGRVILEKNOMUGPL4

not attested not anchored not stored refs pending

The Arp 220 merger on kpc scales

A. Eckart, D. Downes, J. Scharw\"achter, M. Garc\'ia-Mar\'in, S. K\"onig

arxiv:1205.5638 v1 · 2012-05-25 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WY2BYS5OZGVGRVILEKNOMUGPL4}

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	2026-05-18T01:57:17.474736Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6341c4baec9aa68d50b229ae650cf5f336482cb2d8f7fff38a4741bcbceb3e4

Aliases

arxiv: 1205.5638 · arxiv_version: 1205.5638v1 · doi: 10.48550/arxiv.1205.5638 · pith_short_12: WY2BYS5OZGVG · pith_short_16: WY2BYS5OZGVGRVIL · pith_short_8: WY2BYS5O

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/WY2BYS5OZGVGRVILEKNOMUGPL4 \
  | 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: b6341c4baec9aa68d50b229ae650cf5f336482cb2d8f7fff38a4741bcbceb3e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "17a45ce32aead1661f0745984b657724162ddfd0bed004e4a61695dfbb4438ab",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-05-25T08:59:47Z",
    "title_canon_sha256": "d87187090a40d53713744eff43f36b4093763065f722ffd84ee7f3ddbb6a180c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.5638",
    "kind": "arxiv",
    "version": 1
  }
}