Pith Number

pith:C7YRI264

pith:2010:C7YRI264SFX6DGGI3MRN7KD6V7

not attested not anchored not stored refs pending

A Multi-wavelength analysis of M81: insight on the nature of Arp's loop

A. Gil de Paz, A. Sollima, D. Martinez-Delgado, J. J. Gallego-Laborda, R.J. Gabany, T. Hallas

arxiv:1004.1610 v2 · 2010-04-09 · 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{C7YRI264SFX6DGGI3MRN7KD6V7}

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	2026-05-18T02:08:07.334627Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

17f1146bdc916fe198c8db22dfa87eaff1ee8db6a30ba703d3ead5359caf19d3

Aliases

arxiv: 1004.1610 · arxiv_version: 1004.1610v2 · doi: 10.48550/arxiv.1004.1610 · pith_short_12: C7YRI264SFX6 · pith_short_16: C7YRI264SFX6DGGI · pith_short_8: C7YRI264

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/C7YRI264SFX6DGGI3MRN7KD6V7 \
  | 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: 17f1146bdc916fe198c8db22dfa87eaff1ee8db6a30ba703d3ead5359caf19d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f9fa4fae75eaed6c56082baf9e4b636e0a00d16c6e4bcdb6d7722541d9326cc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-04-09T17:21:13Z",
    "title_canon_sha256": "abf3f0194125a76cf853fe9ae051e8c3645ca0ac293b5e590510616357146b10"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.1610",
    "kind": "arxiv",
    "version": 2
  }
}