Pith Number

pith:PDDYC2RF

pith:2015:PDDYC2RF2SMPEJXZQFURN47KQH

not attested not anchored not stored refs pending

Blue outliers among intermediate redshift quasars

A. Del Olmo, D. Dultzin, G. M. Stirpe, J. W. Sulentic, M. A. Mart\'inez-Carballo, P. Marziani

arxiv:1511.07138 v1 · 2015-11-23 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PDDYC2RF2SMPEJXZQFURN47KQH}

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	2026-05-18T01:22:32.919598Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78c7816a25d498f226f9816916f3ea81e823d97570a30af3f7eeaa03823a5414

Aliases

arxiv: 1511.07138 · arxiv_version: 1511.07138v1 · doi: 10.48550/arxiv.1511.07138 · pith_short_12: PDDYC2RF2SMP · pith_short_16: PDDYC2RF2SMPEJXZ · pith_short_8: PDDYC2RF

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/PDDYC2RF2SMPEJXZQFURN47KQH \
  | 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: 78c7816a25d498f226f9816916f3ea81e823d97570a30af3f7eeaa03823a5414

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1b1a1dfe7ee2c8b99c0a8e5c33f802a51a62876488552541a1531a063359457",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-11-23T08:38:06Z",
    "title_canon_sha256": "e21f9d10b074960dc28b0654562111c455457ab871ef893608a7b7a2b4ef31b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.07138",
    "kind": "arxiv",
    "version": 1
  }
}