Pith Number

pith:G6OQJYAI

pith:2011:G6OQJYAIFK47EYLPISNC4H5V5Q

not attested not anchored not stored refs pending

The ALFALFA HI Absorption Pilot Survey: A Wide-Area Blind Damped Lyman Alpha System Survey of the Local Universe

Erin P. Macdonald, Jeremy Darling, Martha P. Haynes, Riccardo Giovanelli

arxiv:1108.4011 v1 · 2011-08-19 · 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{G6OQJYAIFK47EYLPISNC4H5V5Q}

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	2026-05-18T02:00:50.389742Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

379d04e0082ab9f2616f449a2e1fb5ec276ea52c8e1743bd86c606084f8e62d9

Aliases

arxiv: 1108.4011 · arxiv_version: 1108.4011v1 · doi: 10.48550/arxiv.1108.4011 · pith_short_12: G6OQJYAIFK47 · pith_short_16: G6OQJYAIFK47EYLP · pith_short_8: G6OQJYAI

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/G6OQJYAIFK47EYLPISNC4H5V5Q \
  | 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: 379d04e0082ab9f2616f449a2e1fb5ec276ea52c8e1743bd86c606084f8e62d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "49f8c2248fffe16f15f3d8c0afbf3b3fdfc56ab272bbc82a92a5ec06d037bd69",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-08-19T17:18:32Z",
    "title_canon_sha256": "10666de4c197f53e99eaf9d07b8dd368aeefdbd20d2feeeb245f3de71ddcc71d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.4011",
    "kind": "arxiv",
    "version": 1
  }
}