Pith Number

pith:GIFRFVS5

pith:2018:GIFRFVS5L3UYO2UUC7TMIZD6OT

not attested not anchored not stored refs pending

Testing the speed of light over cosmological distances: the combination of strongly lensed and unlensed supernova Ia

Jingzhao Qi, Marek Biesiada, Shuo Cao, Tengpeng Xu, Xiaogang Zheng, Zong-Hong Zhu

arxiv:1810.01287 v1 · 2018-10-02 · 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{GIFRFVS5L3UYO2UUC7TMIZD6OT}

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	2026-05-18T00:01:28.039997Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

320b12d65d5ee9876a9417e6c4647e74d3ef8a3b0cd170cfea33d292b0320bec

Aliases

arxiv: 1810.01287 · arxiv_version: 1810.01287v1 · doi: 10.48550/arxiv.1810.01287 · pith_short_12: GIFRFVS5L3UY · pith_short_16: GIFRFVS5L3UYO2UU · pith_short_8: GIFRFVS5

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/GIFRFVS5L3UYO2UUC7TMIZD6OT \
  | 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: 320b12d65d5ee9876a9417e6c4647e74d3ef8a3b0cd170cfea33d292b0320bec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ccf7f7190667d20be2d9e61eca1f4083a35d011a5eb90b35176f8a19b9f694d4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2018-10-02T14:23:57Z",
    "title_canon_sha256": "1f68f12cf09b826534312a683638da478b06b71bcc07bac7caf0a6ec3f1eb25b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.01287",
    "kind": "arxiv",
    "version": 1
  }
}