Pith Number

pith:SIM2ION3

pith:2015:SIM2ION3PU752PL6KVAZYUX6AS

not attested not anchored not stored refs pending

Narrow absorption lines with two observations of Sloan Digital Sky Survey

Qiu-Sheng Gu, Yan-Mei Chen, Yue Cao, Zhi-Fu Chen

arxiv:1509.05899 v1 · 2015-09-19 · 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{SIM2ION3PU752PL6KVAZYUX6AS}

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	2026-05-18T01:32:36.422079Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9219a439bb7d3fdd3d7e55419c52fe0481aedc1a01de5cbe3b0f7cb6de448449

Aliases

arxiv: 1509.05899 · arxiv_version: 1509.05899v1 · doi: 10.48550/arxiv.1509.05899 · pith_short_12: SIM2ION3PU75 · pith_short_16: SIM2ION3PU752PL6 · pith_short_8: SIM2ION3

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/SIM2ION3PU752PL6KVAZYUX6AS \
  | 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: 9219a439bb7d3fdd3d7e55419c52fe0481aedc1a01de5cbe3b0f7cb6de448449

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9c320311c3aed5d9b82713ef9e8966b1eea0e6708bec9e6747ad50932b1521b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-09-19T14:39:05Z",
    "title_canon_sha256": "40118ac952bbbc1486b447eda424b5b74ba5acedf61f6651310a5220097f31fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.05899",
    "kind": "arxiv",
    "version": 1
  }
}