Pith Number

pith:QDM4W6ZM

pith:2005:QDM4W6ZMRXQK3KORJMAREQNU5V

not attested not anchored not stored refs pending

Discovery and identification of the very high redshift afterglow of GRB 050904

A. Castro-Tirado, A. de Ugarte Postigo, A. Foster, A. Fruchter, A. Gal-Yam, A. Lacluyze, A. Levan, A. Soderberg, B. Schmidt, C. Evans, C. Kouveliotou, C. MacLeod, D. Fox, D. Lamb, D. Moon, D. Reichart, E. Cypriano, E. Figueredo, et al, F. Harrison, J. Bartelme, J. Clemens, J. Crain, J. Gorosabel, J. Graham, J. Haislip, J. Kirschbrown, J. Rhoads, M. Bayliss, M. Jelinek, M. Kasliwal, M. Nysewander, N. Tanvir, P. Kubanek, P. Price, R. Chapman, R. Hudec, R. Priddey, R. Wijers, S. Cenko, S. Guziy, S. Kulkarni, S. Vitek

arxiv:astro-ph/0509660 v1 · 2005-09-22 · 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{QDM4W6ZMRXQK3KORJMAREQNU5V}

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	2026-07-04T17:23:47.982346Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80d9cb7b2c8de0ada9d14b011241b4ed52af86d34bd95da9a38cde0f9fafd664

Aliases

arxiv: astro-ph/0509660 · arxiv_version: astro-ph/0509660v1 · doi: 10.48550/arxiv.astro-ph/0509660 · pith_short_12: QDM4W6ZMRXQK · pith_short_16: QDM4W6ZMRXQK3KOR · pith_short_8: QDM4W6ZM

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/QDM4W6ZMRXQK3KORJMAREQNU5V \
  | 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: 80d9cb7b2c8de0ada9d14b011241b4ed52af86d34bd95da9a38cde0f9fafd664

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b506adaa6b97f43496c43e85a7c622a9fc6cfdb0aad0388b218280922dab2515",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-09-22T08:15:33Z",
    "title_canon_sha256": "f0ce407b152aac2981abe44cb49222855678521300614d004b2cea1ecdb77aaa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0509660",
    "kind": "arxiv",
    "version": 1
  }
}