Pith Number

pith:IXPCPEJC

pith:2018:IXPCPEJC2Q4APF7JFLZWH7SPBM

not attested not anchored not stored refs pending

Constraints on the dark energy with barotropic equation of state: assessing the importance of different observations

O. Sergijenko

arxiv:1811.04466 v1 · 2018-11-11 · 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{IXPCPEJC2Q4APF7JFLZWH7SPBM}

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	2026-05-18T00:01:05.111222Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45de279122d4380797e92af363fe4f0b16b2f73b0e05031657882694c446c1e8

Aliases

arxiv: 1811.04466 · arxiv_version: 1811.04466v1 · doi: 10.48550/arxiv.1811.04466 · pith_short_12: IXPCPEJC2Q4A · pith_short_16: IXPCPEJC2Q4APF7J · pith_short_8: IXPCPEJC

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/IXPCPEJC2Q4APF7JFLZWH7SPBM \
  | 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: 45de279122d4380797e92af363fe4f0b16b2f73b0e05031657882694c446c1e8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ccf9311c2f4a486391f588203af159fcb66910275476de465ad56978ab657f3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2018-11-11T19:55:16Z",
    "title_canon_sha256": "cccf7412963e72a037462576fa1f2e21fef60d0ce494f14a34eb223a6631ecfd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.04466",
    "kind": "arxiv",
    "version": 1
  }
}