Pith Number

pith:P2OBUY7H

pith:2001:P2OBUY7HWJIDFV4APWUUKW67CS

not attested not anchored not stored refs pending

Near-infrared micro-variability of radio-loud quasars

Alicia Oshlack, Matthew Whiting, Rachel Webster (University of Melbourne)

arxiv:astro-ph/0111171 v1 · 2001-11-08 · 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{P2OBUY7HWJIDFV4APWUUKW67CS}

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	2026-07-04T16:24:25.956154Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e9c1a63e7b25032d7807da9455bdf14b195616353b6ecb5937fb053dd43eec8

Aliases

arxiv: astro-ph/0111171 · arxiv_version: astro-ph/0111171v1 · doi: 10.48550/arxiv.astro-ph/0111171 · pith_short_12: P2OBUY7HWJID · pith_short_16: P2OBUY7HWJIDFV4A · pith_short_8: P2OBUY7H

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/P2OBUY7HWJIDFV4APWUUKW67CS \
  | 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: 7e9c1a63e7b25032d7807da9455bdf14b195616353b6ecb5937fb053dd43eec8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e7fa9769ce7cd1db54bff505459531a0d68b288b4707b021eca8f34b2948a0a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-11-08T18:31:35Z",
    "title_canon_sha256": "ce34a93ea037450e2da1a8ec06a87792331144707058dde9deb209c9e7c1e29a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0111171",
    "kind": "arxiv",
    "version": 1
  }
}