Pith Number

pith:GCOD6KHB

pith:2013:GCOD6KHBNYGRUBB672XXT5S665

not attested not anchored not stored refs pending

X-ray Absorption of High Redshift Quasars

Assaf Eitan, Ehud Behar

arxiv:1307.2053 v1 · 2013-07-08 · 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{GCOD6KHBNYGRUBB672XXT5S665}

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	2026-05-18T01:48:58.754266Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

309c3f28e16e0d1a043efeaf79f65ef77eecec5721b36ffcaa8408f7611f145f

Aliases

arxiv: 1307.2053 · arxiv_version: 1307.2053v1 · doi: 10.48550/arxiv.1307.2053 · pith_short_12: GCOD6KHBNYGR · pith_short_16: GCOD6KHBNYGRUBB6 · pith_short_8: GCOD6KHB

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/GCOD6KHBNYGRUBB672XXT5S665 \
  | 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: 309c3f28e16e0d1a043efeaf79f65ef77eecec5721b36ffcaa8408f7611f145f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "862c18935cd7752465fc51a863b03f444cd9b937fd091b304e86951be039b6ee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-07-08T12:02:46Z",
    "title_canon_sha256": "d51f89302144d57c7ae70364d892c600639b5c3de65f93f08a34364437358163"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.2053",
    "kind": "arxiv",
    "version": 1
  }
}