Pith Number

pith:R42522GM

pith:2015:R42522GMCDEETBZ3VMYZPGMVHT

not attested not anchored not stored refs pending

Cosmic bulk viscosity through backreaction

G. Eddy, I. Chirinos, Oliver F. Piattella, Rodrigo M. Barbosa, Winfried Zimdahl

arxiv:1512.07835 v2 · 2015-12-24 · gr-qc · astro-ph.CO · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R42522GMCDEETBZ3VMYZPGMVHT}

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	2026-05-18T01:17:17.849432Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8f35dd68cc10c849873bab319799953ceafc46437ce15a7ce2789cc54f80d4ed

Aliases

arxiv: 1512.07835 · arxiv_version: 1512.07835v2 · doi: 10.48550/arxiv.1512.07835 · pith_short_12: R42522GMCDEE · pith_short_16: R42522GMCDEETBZ3 · pith_short_8: R42522GM

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/R42522GMCDEETBZ3VMYZPGMVHT \
  | 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: 8f35dd68cc10c849873bab319799953ceafc46437ce15a7ce2789cc54f80d4ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44551422b28cf668769a0c63cdfa80fa65fb676e414ec02cfc07a002750c86a0",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-12-24T15:12:50Z",
    "title_canon_sha256": "40da2f09a4abf9a09995dfc89e20edb92e7758daf7f7272288aa25a9d6da76eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.07835",
    "kind": "arxiv",
    "version": 2
  }
}