Pith Number

pith:MDZYKSMR

pith:2007:MDZYKSMRLO3FNOX2WVWDOSAQXP

not attested not anchored not stored refs pending

Accretion disc viscosity: how big is alpha?

A. R. King, J. E. Pringle & M. Livio

arxiv:astro-ph/0701803 v1 · 2007-01-29 · 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{MDZYKSMRLO3FNOX2WVWDOSAQXP}

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	2026-07-04T15:16:32.554893Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60f38549915bb656bafab56c374810bbd2b853d58b792270bde649aa6d74f3de

Aliases

arxiv: astro-ph/0701803 · arxiv_version: astro-ph/0701803v1 · doi: 10.48550/arxiv.astro-ph/0701803 · pith_short_12: MDZYKSMRLO3F · pith_short_16: MDZYKSMRLO3FNOX2 · pith_short_8: MDZYKSMR

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/MDZYKSMRLO3FNOX2WVWDOSAQXP \
  | 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: 60f38549915bb656bafab56c374810bbd2b853d58b792270bde649aa6d74f3de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b69b2b02faa46201f497c6e8fbb66c1c39b07daf68b06f137838a1b3ec5adee",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-01-29T16:41:13Z",
    "title_canon_sha256": "ae79242ccbdf95cce1a9718ecb1344bbb418c1ab9d53399f4366e35349af0824"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0701803",
    "kind": "arxiv",
    "version": 1
  }
}