Pith Number

pith:UUMEQQQP

pith:2020:UUMEQQQPHXLAQCUVDHAH4O4ERT

not attested not anchored not stored refs pending

Astrophysical Constraints on Strong Modified Gravity

Daniela P\'erez, Gustavo E. Romero

arxiv:2001.00863 v1 · 2020-01-03 · gr-qc · astro-ph.CO · 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{UUMEQQQPHXLAQCUVDHAH4O4ERT}

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	2026-07-05T00:29:33.113680Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a51848420f3dd6080a9519c07e3b848cfc350a547ef3e7db18a869050ff92dc8

Aliases

arxiv: 2001.00863 · arxiv_version: 2001.00863v1 · doi: 10.48550/arxiv.2001.00863 · pith_short_12: UUMEQQQPHXLA · pith_short_16: UUMEQQQPHXLAQCUV · pith_short_8: UUMEQQQP

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/UUMEQQQPHXLAQCUVDHAH4O4ERT \
  | 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: a51848420f3dd6080a9519c07e3b848cfc350a547ef3e7db18a869050ff92dc8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d8ae61112bda7923cbb7ced5f85a7dd1f6ae4f35a81906fa859467e2b14c154",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.GA",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2020-01-03T15:38:42Z",
    "title_canon_sha256": "24f5c7afb9138e4a208c6206255dc375d24aaba95a2fb70b0942a2dd16cffd74"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.00863",
    "kind": "arxiv",
    "version": 1
  }
}