Pith Number

pith:FMV2BQXY

pith:2005:FMV2BQXYVFOB6MYSWW3DNCN7XK

not attested not anchored not stored refs pending

GRB 050904 at redshift 6.3: observations of the oldest cosmic explosion after the Big Bang

A. Fernandez-Soto, A. Grazian, D. Malesani, et al, F. Fiore, G. Chincarini, G. Tagliaferri, L.A. Antonelli, L. Stella, M. Della Valle, P. D'Avanzo, S. Campana, S. Covino, V. Testa

arxiv:astro-ph/0509766 v2 · 2005-09-26 · 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{FMV2BQXYVFOB6MYSWW3DNCN7XK}

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.

Cited by

1 paper in Pith

Early Optical Follow-up of Gamma-Ray Bursts: The Critical Role of Robotic Telescopes

Receipt and verification

First computed	2026-07-04T17:23:48.053601Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b2ba0c2f8a95c1f3312b5b63689bfbab612d6b6dd4edaa0b5875e659d6b7eab

Aliases

arxiv: astro-ph/0509766 · arxiv_version: astro-ph/0509766v2 · doi: 10.48550/arxiv.astro-ph/0509766 · pith_short_12: FMV2BQXYVFOB · pith_short_16: FMV2BQXYVFOB6MYS · pith_short_8: FMV2BQXY

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/FMV2BQXYVFOB6MYSWW3DNCN7XK \
  | 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: 2b2ba0c2f8a95c1f3312b5b63689bfbab612d6b6dd4edaa0b5875e659d6b7eab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "012f973a09c26c2932b8e6283d0c86949f25c64cb429f8e8f48725b0478ea629",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-09-26T18:35:18Z",
    "title_canon_sha256": "fde99713be23cc6409cbcaac023e75d1ba402338a3dfdd0ce3e6c366fa1d2bf3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0509766",
    "kind": "arxiv",
    "version": 2
  }
}