Pith Number

pith:YUL2KYNI

pith:2009:YUL2KYNIJ3N3X7T2NOWDOK5IAC

not attested not anchored not stored refs pending

A Study of Interstellar Gas and Stars in the Gravitationally Lensed Galaxy `The Cosmic Eye' from Rest-Frame Ultraviolet Spectroscopy

(2) Department of Physics, (3) California Institute of Technology), Alice E. Shapley (2), Anna M. Quider (1), Astronomy, Charles C. Steidel (3), Daniel P. Stark (1) ((1) Institute of Astronomy, Los Angeles, Max Pettini (1), University of California, University of Cambridge

arxiv:0910.0840 v2 · 2009-10-05 · 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{YUL2KYNIJ3N3X7T2NOWDOK5IAC}

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	2026-05-18T02:11:26.559454Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c517a561a84edbbbfe7a6bac372ba8008012b179af3f9e9d3982278aedcd8ba1

Aliases

arxiv: 0910.0840 · arxiv_version: 0910.0840v2 · doi: 10.48550/arxiv.0910.0840 · pith_short_12: YUL2KYNIJ3N3 · pith_short_16: YUL2KYNIJ3N3X7T2 · pith_short_8: YUL2KYNI

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/YUL2KYNIJ3N3X7T2NOWDOK5IAC \
  | 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: c517a561a84edbbbfe7a6bac372ba8008012b179af3f9e9d3982278aedcd8ba1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44c3ce003218752cc039e4929d4ef1a258ac84c6061c10a7724fbef63d6d52be",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-05T20:00:37Z",
    "title_canon_sha256": "e706fca8296ac3c072c174bf9b91aa8777aae8a33257d1f266977a0d4785add0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.0840",
    "kind": "arxiv",
    "version": 2
  }
}