Pith Number

pith:2POX2YZI

pith:2010:2POX2YZIAWBTQC5Q53NPX6FVVU

not attested not anchored not stored refs pending

GRBs as standard candles: There is no "circularity problem" (and there never was)

Carlo Graziani

arxiv:1002.3434 v2 · 2010-02-18 · 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{2POX2YZIAWBTQC5Q53NPX6FVVU}

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	2026-05-18T04:42:14.611785Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3dd7d63280583380bb0eedafbf8b5ad2da610bfc74766eb8757e52db68e96e0

Aliases

arxiv: 1002.3434 · arxiv_version: 1002.3434v2 · doi: 10.48550/arxiv.1002.3434 · pith_short_12: 2POX2YZIAWBT · pith_short_16: 2POX2YZIAWBTQC5Q · pith_short_8: 2POX2YZI

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/2POX2YZIAWBTQC5Q53NPX6FVVU \
  | 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: d3dd7d63280583380bb0eedafbf8b5ad2da610bfc74766eb8757e52db68e96e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b28a04d267c0871b7b0cd79cbc8cc9d93a41a3301ab0130c3da7c32ae88f6ec3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-02-18T07:07:50Z",
    "title_canon_sha256": "ecb2fba1ae4a3cf333d017c5d7472d6de71a0d97aee2a3830fb97a5a90bfd815"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.3434",
    "kind": "arxiv",
    "version": 2
  }
}