Pith Number

pith:ZKKTA4MN

pith:2012:ZKKTA4MNFK2ZLMIZZR2YYA7P7V

not attested not anchored not stored refs pending

Tests of the universality of free fall for strongly self-gravitating bodies with radio pulsars

Michael Kramer, Norbert Wex, Paulo C. C. Freire

arxiv:1205.3751 v2 · 2012-05-16 · gr-qc · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZKKTA4MNFK2ZLMIZZR2YYA7P7V}

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	2026-05-18T01:57:31.294413Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca9530718d2ab595b119cc758c03effd69904fd352eea542c6410bcdebcfb9af

Aliases

arxiv: 1205.3751 · arxiv_version: 1205.3751v2 · doi: 10.48550/arxiv.1205.3751 · pith_short_12: ZKKTA4MNFK2Z · pith_short_16: ZKKTA4MNFK2ZLMIZ · pith_short_8: ZKKTA4MN

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/ZKKTA4MNFK2ZLMIZZR2YYA7P7V \
  | 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: ca9530718d2ab595b119cc758c03effd69904fd352eea542c6410bcdebcfb9af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a0a456012b08158687186400d6c34842b2c916b4e0a4f95159d122724e42258",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-05-16T18:08:30Z",
    "title_canon_sha256": "f01190c26b11fc334675df102910f99d2c54ed5d6b33a9d9d23e4a695f10dc4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.3751",
    "kind": "arxiv",
    "version": 2
  }
}