Pith Number

pith:SEVKOCKJ

pith:2008:SEVKOCKJ2JKQS2C4FYNGBO5RID

not attested not anchored not stored refs pending

Dark Matter Accretion into Supermassive Black Holes

Jos\'e Antonio De Freitas Pacheco (OCA), S\'ebastien Peirani (IAP)

arxiv:0802.2041 v1 · 2008-02-14 · 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{SEVKOCKJ2JKQS2C4FYNGBO5RID}

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	2026-07-04T15:34:02.438269Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

912aa70949d25509685c2e1a60bbb140c9294ebe4cff570c8fad7bcfeced9e4d

Aliases

arxiv: 0802.2041 · arxiv_version: 0802.2041v1 · doi: 10.48550/arxiv.0802.2041 · pith_short_12: SEVKOCKJ2JKQ · pith_short_16: SEVKOCKJ2JKQS2C4 · pith_short_8: SEVKOCKJ

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/SEVKOCKJ2JKQS2C4FYNGBO5RID \
  | 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: 912aa70949d25509685c2e1a60bbb140c9294ebe4cff570c8fad7bcfeced9e4d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93341a681d3260440f9c3dc769595752bffade07e06e4d6df1a439b0ed065a3a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-02-14T16:01:13Z",
    "title_canon_sha256": "81bbb4a2553b99e4ee99b8534e1788328b3d7f6f6bca6117d5ac7561bef8e022"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0802.2041",
    "kind": "arxiv",
    "version": 1
  }
}