Pith Number

pith:LM7QEJON

pith:2010:LM7QEJONDHRXTVKWK7FAMOLTTM

not attested not anchored not stored refs pending

The reanalysis of spectra of GRB 080913 to estimate the neutral fraction of the IGM at a redshift of 6.7

D. J. Mortlock, J. P. U. Fynbo, M. Patel, S. J. Warren

arxiv:1002.4663 v1 · 2010-02-24 · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LM7QEJONDHRXTVKWK7FAMOLTTM}

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	2026-05-18T04:19:12.430505Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5b3f0225cd19e379d55657ca0639739b3e9e998ad9607aadc46138e1378ebb1d

Aliases

arxiv: 1002.4663 · arxiv_version: 1002.4663v1 · doi: 10.48550/arxiv.1002.4663 · pith_short_12: LM7QEJONDHRX · pith_short_16: LM7QEJONDHRXTVKW · pith_short_8: LM7QEJON

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/LM7QEJONDHRXTVKWK7FAMOLTTM \
  | 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: 5b3f0225cd19e379d55657ca0639739b3e9e998ad9607aadc46138e1378ebb1d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8578fb163b9edf60222722365a50839dbef8ac10a99eab84228808ee7fac1b76",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-02-24T23:56:03Z",
    "title_canon_sha256": "1ec1d00553a7988c01418629220bd24254f8718115463e2dc41bf67639b6987d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.4663",
    "kind": "arxiv",
    "version": 1
  }
}