Pith Number

pith:RYAFOXSL

pith:2015:RYAFOXSL76QW2WVSKCWO3V2JEP

not attested not anchored not stored refs pending

Utility of observational Hubble parameter data on dark energy evolution

Shi-Yu Li, Tong-Jie Zhang, Xiao-Lei Meng, Xin Wang

arxiv:1507.02517 v1 · 2015-07-09 · 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{RYAFOXSL76QW2WVSKCWO3V2JEP}

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	2026-05-18T01:37:06.478701Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8e00575e4bffa16d5ab250acedd74923f0d8521dae527f095d6c151032943fc7

Aliases

arxiv: 1507.02517 · arxiv_version: 1507.02517v1 · doi: 10.48550/arxiv.1507.02517 · pith_short_12: RYAFOXSL76QW · pith_short_16: RYAFOXSL76QW2WVS · pith_short_8: RYAFOXSL

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/RYAFOXSL76QW2WVSKCWO3V2JEP \
  | 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: 8e00575e4bffa16d5ab250acedd74923f0d8521dae527f095d6c151032943fc7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90ce2564556cd038576384042f651a07aef80b227bf76ef2160f0fe22d37c87d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2015-07-09T14:13:37Z",
    "title_canon_sha256": "3e91e2cb8e0a772599faa4f7f06d8c848ecaab599e19433029fd590ce06c049b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.02517",
    "kind": "arxiv",
    "version": 1
  }
}