Pith Number

pith:ZM6E2VVF

pith:2009:ZM6E2VVFFJFQ7NKAGVQFSDYBML

not attested not anchored not stored refs pending

Are GRB optical afterglows relatively brighter at high z?

A. Imerito, D.G. Blair, D.M. Coward, R.R. Burman

arxiv:0908.0410 v1 · 2009-08-04 · astro-ph.HE · 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{ZM6E2VVFFJFQ7NKAGVQFSDYBML}

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	2026-05-18T02:12:44.916542Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cb3c4d56a52a4b0fb5403560590f0162fd6c02acacecccf19fa4d03e01fc4463

Aliases

arxiv: 0908.0410 · arxiv_version: 0908.0410v1 · doi: 10.48550/arxiv.0908.0410 · pith_short_12: ZM6E2VVFFJFQ · pith_short_16: ZM6E2VVFFJFQ7NKA · pith_short_8: ZM6E2VVF

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/ZM6E2VVFFJFQ7NKAGVQFSDYBML \
  | 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: cb3c4d56a52a4b0fb5403560590f0162fd6c02acacecccf19fa4d03e01fc4463

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "249e87f1d07d332b6da5cdb29c6a24d65c2adb95181281f57bb43235104e1017",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-08-04T08:48:15Z",
    "title_canon_sha256": "b5d6d6ac842d05ff72d6942c8197006c6fc77dc23c1e7e0567200e11e297b721"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.0410",
    "kind": "arxiv",
    "version": 1
  }
}