Pith Number

pith:GE3OSGUS

pith:1999:GE3OSGUSMQTMKTBGMVIJRWJWOH

not attested not anchored not stored refs pending

Old and New Advances in Black Hole Accretion Disk Theory

Roland Svensson (Stockholm Observatory, Sweden)

arxiv:astro-ph/9902205 v1 · 1999-02-15 · 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{GE3OSGUSMQTMKTBGMVIJRWJWOH}

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	2026-07-04T14:16:33.456491Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3136e91a926426c54c26655098d93671fa85ebf83567a7a217fcdca383307f92

Aliases

arxiv: astro-ph/9902205 · arxiv_version: astro-ph/9902205v1 · doi: 10.48550/arxiv.astro-ph/9902205 · pith_short_12: GE3OSGUSMQTM · pith_short_16: GE3OSGUSMQTMKTBG · pith_short_8: GE3OSGUS

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/GE3OSGUSMQTMKTBGMVIJRWJWOH \
  | 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: 3136e91a926426c54c26655098d93671fa85ebf83567a7a217fcdca383307f92

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff56aa44e0d86aa7c678ea91ef0a7250f3b418735464f7287367e45a7b39a920",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-02-15T12:49:47Z",
    "title_canon_sha256": "4e4093aa1949716286ae41be7db5fcf3a96d0bf7637a071c9e53847ff49ba8e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9902205",
    "kind": "arxiv",
    "version": 1
  }
}