Pith Number

pith:VKFY5H6P

pith:2012:VKFY5H6PNKAYO4NX6GUPPBOQTW

not attested not anchored not stored refs pending

First measurement of the bulk flow of nearby galaxies using the cosmic microwave background

2), 2) ((1) University of Waterloo, (2) Perimeter Institute for Theoretical Physics), Guilhem Lavaux (1, Michael J. Hudson (1, Niayesh Afshordi (1

arxiv:1207.1721 v2 · 2012-07-06 · 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{VKFY5H6PNKAYO4NX6GUPPBOQTW}

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	2026-05-18T01:56:27.205946Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa8b8e9fcf6a818771b7f1a8f785d09db65f38edb48f1dd6944de5e6b40e58af

Aliases

arxiv: 1207.1721 · arxiv_version: 1207.1721v2 · doi: 10.48550/arxiv.1207.1721 · pith_short_12: VKFY5H6PNKAY · pith_short_16: VKFY5H6PNKAYO4NX · pith_short_8: VKFY5H6P

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/VKFY5H6PNKAYO4NX6GUPPBOQTW \
  | 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: aa8b8e9fcf6a818771b7f1a8f785d09db65f38edb48f1dd6944de5e6b40e58af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b76fc316f04455b03241255f4f2f87fc8415fecfc69e1bbea0cb65aa7f245492",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-07-06T20:00:01Z",
    "title_canon_sha256": "0fa11e0ea295b9cf388b1cca0e3a6a53e2d7f2ae5d69608b5ccdfc37da282536"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.1721",
    "kind": "arxiv",
    "version": 2
  }
}