Pith Number

pith:EFAA25EM

pith:2010:EFAA25EMJUIOVO5N6ROW3DUD4Y

not attested not anchored not stored refs pending

The Lyman-alpha emission of high-z damped Lyman-alpha systems

H. Rahmani, P. Noterdaeme, P. Petitjean, R. Srianand

arxiv:1009.1395 v1 · 2010-09-07 · 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{EFAA25EMJUIOVO5N6ROW3DUD4Y}

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	2026-05-18T02:05:35.390870Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21400d748c4d10eabbadf45d6d8e83e624dff5d94d65cf88aa95dac1fa1b43fa

Aliases

arxiv: 1009.1395 · arxiv_version: 1009.1395v1 · doi: 10.48550/arxiv.1009.1395 · pith_short_12: EFAA25EMJUIO · pith_short_16: EFAA25EMJUIOVO5N · pith_short_8: EFAA25EM

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/EFAA25EMJUIOVO5N6ROW3DUD4Y \
  | 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: 21400d748c4d10eabbadf45d6d8e83e624dff5d94d65cf88aa95dac1fa1b43fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36f61ebc2a7b02c6ea71f95218a4c411afc66ec86455dd15fdf97239ee36b273",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-09-07T20:16:17Z",
    "title_canon_sha256": "70cf880e4e66b51b58f81bf46267a3340f4866b7c39efeffa7297a3e95cc04c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.1395",
    "kind": "arxiv",
    "version": 1
  }
}