Pith Number

pith:YRLOOCT4

pith:2006:YRLOOCT4Y3YYY6YE6OJLS7NNSH

not attested not anchored not stored refs pending

HI column densities of z > 2 Swift gamma-ray bursts

A. de Ugarte Postigo, A. S. Fruchter, B. L. Jensen, C. C. Th\"one, C. Ledoux, D. A. Kann, D. Reichart, D. Watson, G. Bj\"ornsson, J. Gorosabel, J. Hjorth, J. P. U. Fynbo, J. Sollerman, K. Pedersen, K. Wiersema, N. R. Tanvir, P. Jakobsson, P. Vreeswijk, R. Chapman, R. S. Priddey, S. Klose

arxiv:astro-ph/0609450 v2 · 2006-09-15 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YRLOOCT4Y3YYY6YE6OJLS7NNSH}

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	2026-05-18T01:07:25.231419Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c456e70a7cc6f18c7b04f392b97dad91e0c01227513b78c6cd7158ce92693648

Aliases

arxiv: astro-ph/0609450 · arxiv_version: astro-ph/0609450v2 · doi: 10.48550/arxiv.astro-ph/0609450 · pith_short_12: YRLOOCT4Y3YY · pith_short_16: YRLOOCT4Y3YYY6YE · pith_short_8: YRLOOCT4

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/YRLOOCT4Y3YYY6YE6OJLS7NNSH \
  | 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: c456e70a7cc6f18c7b04f392b97dad91e0c01227513b78c6cd7158ce92693648

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b62860ef0cc92a09969c99b4dae0c6ec4b29b60c1c301927bb73888bce45f8f6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-09-15T20:00:34Z",
    "title_canon_sha256": "c70ada70833909164c80f5869fed9c6c7588090fb36331040c09fa69b95cfee7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0609450",
    "kind": "arxiv",
    "version": 2
  }
}