Pith Number

pith:ZQGFIOEU

pith:2012:ZQGFIOEUWLDQCVPUT6HV4WJZDV

not attested not anchored not stored refs pending

On the rapid demise of Lyman-alpha emitters at z>7 due to the increasing incidence of optically thick absorption systems

Cambridge), James S. Bolton (Nottingham), Martin G. Haehnelt (IoA/KICC

arxiv:1208.4417 v2 · 2012-08-22 · 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{ZQGFIOEUWLDQCVPUT6HV4WJZDV}

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	2026-05-18T01:54:59.900464Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cc0c543894b2c70155f49f8f5e59391d463be0399095dbb1b60aa8e276720db3

Aliases

arxiv: 1208.4417 · arxiv_version: 1208.4417v2 · doi: 10.48550/arxiv.1208.4417 · pith_short_12: ZQGFIOEUWLDQ · pith_short_16: ZQGFIOEUWLDQCVPU · pith_short_8: ZQGFIOEU

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/ZQGFIOEUWLDQCVPUT6HV4WJZDV \
  | 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: cc0c543894b2c70155f49f8f5e59391d463be0399095dbb1b60aa8e276720db3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd367543486b198e3a6104f2a0eedf3cb2406ab5b5b1244b69f38dc41d785bac",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-08-22T02:50:45Z",
    "title_canon_sha256": "11209a43cdfa7bba9f0f6100ff75a05fbbca74ea8edd7f5edcf23f3b85d7bbe7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.4417",
    "kind": "arxiv",
    "version": 2
  }
}