Pith Number

pith:MA7BBCW3

pith:2010:MA7BBCW3S2ZOVM5TLWLQDENS4U

not attested not anchored not stored refs pending

High resolution spectroscopy of the three dimensional cosmic web with close QSO groups

F. Saitta, M. Cappetta, M. Viel, S. Cristiani, V. D'Odorico

arxiv:1004.0221 v2 · 2010-04-01 · 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{MA7BBCW3S2ZOVM5TLWLQDENS4U}

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	2026-05-18T04:41:05.885310Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

603e108adb96b2eab3b35d970191b2e53aff29442ef26c06e32d8211613da61c

Aliases

arxiv: 1004.0221 · arxiv_version: 1004.0221v2 · doi: 10.48550/arxiv.1004.0221 · pith_short_12: MA7BBCW3S2ZO · pith_short_16: MA7BBCW3S2ZOVM5T · pith_short_8: MA7BBCW3

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/MA7BBCW3S2ZOVM5TLWLQDENS4U \
  | 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: 603e108adb96b2eab3b35d970191b2e53aff29442ef26c06e32d8211613da61c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff2f0eaf14c45141a6085d62167459709d9cbff35f38347c4c25a6b26ad87c08",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-04-01T19:45:28Z",
    "title_canon_sha256": "1b5da11bfe3dc87a5ea4aa294412c25b14a017efc193bf765f00a5840c21188e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.0221",
    "kind": "arxiv",
    "version": 2
  }
}