Pith Number

pith:SI7CRUPU

pith:2017:SI7CRUPUNJMN3K7MMOXCEUAS5Q

not attested not anchored not stored refs pending

A covariant approach to parameterised cosmological perturbations

Macarena Lagos, Oliver J. Tattersall, Pedro G. Ferreira

arxiv:1706.10091 v2 · 2017-06-30 · gr-qc · 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{SI7CRUPUNJMN3K7MMOXCEUAS5Q}

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	2026-05-18T00:35:31.069659Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

923e28d1f46a58ddabec63ae225012ec235a2e26ff4c8bbfbb0c67cddc717d39

Aliases

arxiv: 1706.10091 · arxiv_version: 1706.10091v2 · doi: 10.48550/arxiv.1706.10091 · pith_short_12: SI7CRUPUNJMN · pith_short_16: SI7CRUPUNJMN3K7M · pith_short_8: SI7CRUPU

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/SI7CRUPUNJMN3K7MMOXCEUAS5Q \
  | 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: 923e28d1f46a58ddabec63ae225012ec235a2e26ff4c8bbfbb0c67cddc717d39

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1add6f742e21d9968954ff49e4cd037850fa48f9f44237d66d930bd55179d7e",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2017-06-30T09:49:17Z",
    "title_canon_sha256": "c97c38c7e8bde64d9845bdb042c762c52ab006e629503a5fc561436030e269be"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.10091",
    "kind": "arxiv",
    "version": 2
  }
}