Pith Number

pith:NRCOCRIR

pith:2015:NRCOCRIRK7KORP7LW5UNC6OUI5

not attested not anchored not stored refs pending

The circum-galactic medium of quasars: CIV absorption systems

A. Treves, E. P. Farina, M. Landoni, R. Falomo, R. Scarpa

arxiv:1512.05115 v1 · 2015-12-16 · astro-ph.GA · 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{NRCOCRIRK7KORP7LW5UNC6OUI5}

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	2026-05-18T01:21:50.915869Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c44e1451157d4e8bfebb768d179d4475fdb78849021ad7c9b1d89b81a5c009c

Aliases

arxiv: 1512.05115 · arxiv_version: 1512.05115v1 · doi: 10.48550/arxiv.1512.05115 · pith_short_12: NRCOCRIRK7KO · pith_short_16: NRCOCRIRK7KORP7L · pith_short_8: NRCOCRIR

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/NRCOCRIRK7KORP7LW5UNC6OUI5 \
  | 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: 6c44e1451157d4e8bfebb768d179d4475fdb78849021ad7c9b1d89b81a5c009c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85f51c41d8d3771613c7279381bbadca12954cae8a9e4d5800ae2b008bd776f7",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-12-16T10:25:31Z",
    "title_canon_sha256": "afdf6866517e54a0392c4e5827f732c1d6d46034f2414d3fd6bbd0fbaa429a59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.05115",
    "kind": "arxiv",
    "version": 1
  }
}