Pith Number

pith:RRRZBHDS

pith:2011:RRRZBHDSYVLJACONEQ4JQ7DSQ2

not attested not anchored not stored refs pending

Evidence for non-evolving FeII/MgII ratios in rapidly accreting z~6 QSOs

Anna Pasquali, Fabian Walter, Gisella De Rosa, Hans-Walter Rix, Jaron Kurk, Linhua Jiang, Roberto Decarli, Xiaohui Fan

arxiv:1106.5501 v1 · 2011-06-27 · 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{RRRZBHDSYVLJACONEQ4JQ7DSQ2}

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	2026-05-18T02:01:30.178402Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c63909c72c5569009cd2438987c7286a3e90c7a61aa20d8a6a9ac716f7a3eab

Aliases

arxiv: 1106.5501 · arxiv_version: 1106.5501v1 · doi: 10.48550/arxiv.1106.5501 · pith_short_12: RRRZBHDSYVLJ · pith_short_16: RRRZBHDSYVLJACON · pith_short_8: RRRZBHDS

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/RRRZBHDSYVLJACONEQ4JQ7DSQ2 \
  | 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: 8c63909c72c5569009cd2438987c7286a3e90c7a61aa20d8a6a9ac716f7a3eab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff59382d324bec1eca30b4b22130aa3394b6c5457dcb2070dfb55f3e3e3d5809",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-06-27T20:00:03Z",
    "title_canon_sha256": "cdc7fd8f14b707fafe41094eb4020e5b36a216ba57c7d920c22a702f1ea30132"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.5501",
    "kind": "arxiv",
    "version": 1
  }
}