Pith Number

pith:BHQBGMQD

pith:2004:BHQBGMQD3OFZAHOSG72JORDE55

not attested not anchored not stored refs pending

Probing Halos of Galaxies at Very Large Radii using Background QSOs

ANU), Claude Carignan (U de Montreal), Ken Freeman (MSSSO, Rosemary Wyse (JHU), Stephanie Cote (NRC/HIA), Tom Broadhurst (Tel-Aviv University)

arxiv:astro-ph/0410288 v1 · 2004-10-11 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BHQBGMQD3OFZAHOSG72JORDE55}

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	2026-05-18T02:40:26.088677Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

09e0133203db8b901dd237f4974464ef49581432cdf3b05455e8c8dbf5bad0ad

Aliases

arxiv: astro-ph/0410288 · arxiv_version: astro-ph/0410288v1 · doi: 10.48550/arxiv.astro-ph/0410288 · pith_short_12: BHQBGMQD3OFZ · pith_short_16: BHQBGMQD3OFZAHOS · pith_short_8: BHQBGMQD

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/BHQBGMQD3OFZAHOSG72JORDE55 \
  | 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: 09e0133203db8b901dd237f4974464ef49581432cdf3b05455e8c8dbf5bad0ad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6b8d58507ca0e67c8d215f4bc74f82ffc98b5d3a527f37acd0dd7c7ad6c98ab",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-10-11T22:52:47Z",
    "title_canon_sha256": "2bee38f9da279472823b800fcb7a88c712d702dfed574aad6492ce78a025c8f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0410288",
    "kind": "arxiv",
    "version": 1
  }
}