Pith Number

pith:3KDEOPI3

pith:2013:3KDEOPI3KGHY2EHI2RFJ6GKXDI

not attested not anchored not stored refs pending

Quasars Probing Quasars VI. Excess HI Absorption Within One Proper Mpc of z~2 Quasars

2), (2) Max-Planck-Institut fur Astronomie, (3) Institute for Advanced Study, (4) California Institute of Technology, (5) University of Victoria, (6) UCSB, (7) University of Wyoming, (8) MIT), Adam Myers (7, Crystal L. Martin (6), Jo Bovy (3), Joseph F. Hennawi (2), J. Xavier Prochaska (1, Kate H.R. Rubin (2), Khee-Gan Lee (2), Marie Wingyee Lau (1), Robert A. Simcoe (8) ((1) UCO/Lick Observatory, Sara L. Ellison (5), Sebastiano Cantalupo (1), S.G. Djorgovski (4), UC Santa Cruz

arxiv:1308.6222 v1 · 2013-08-28 · 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{3KDEOPI3KGHY2EHI2RFJ6GKXDI}

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	2026-05-18T01:47:57.347299Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

da86473d1b518f8d10e8d44a9f19571a3b6c4b48a04b8cc418d98e9ff60571c5

Aliases

arxiv: 1308.6222 · arxiv_version: 1308.6222v1 · doi: 10.48550/arxiv.1308.6222 · pith_short_12: 3KDEOPI3KGHY · pith_short_16: 3KDEOPI3KGHY2EHI · pith_short_8: 3KDEOPI3

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/3KDEOPI3KGHY2EHI2RFJ6GKXDI \
  | 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: da86473d1b518f8d10e8d44a9f19571a3b6c4b48a04b8cc418d98e9ff60571c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "80f5402ee24e6b83a7f52d490b9367249497201ecb59c9d86003f3f57b494e3b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-08-28T17:16:03Z",
    "title_canon_sha256": "24cc75de99fbf7e5c871295145e5fcff62486910b3d0dae95aed5338ed635329"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.6222",
    "kind": "arxiv",
    "version": 1
  }
}