Pith Number

pith:4T3AFTXS

pith:2008:4T3AFTXSR4OILHZJ6RDWJKUXI4

not attested not anchored not stored refs pending

Dark Energy Accretion onto a Black Hole in an Expanding Universe

Cheng-Yi Sun

arxiv:0812.2996 v3 · 2008-12-16 · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4T3AFTXSR4OILHZJ6RDWJKUXI4}

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	2026-05-18T02:35:08.797193Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4f602cef28f1c859f29f44764aa97470416043171d2e6b457363b9110370e98

Aliases

arxiv: 0812.2996 · arxiv_version: 0812.2996v3 · doi: 10.48550/arxiv.0812.2996 · pith_short_12: 4T3AFTXSR4OI · pith_short_16: 4T3AFTXSR4OILHZJ · pith_short_8: 4T3AFTXS

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/4T3AFTXSR4OILHZJ6RDWJKUXI4 \
  | 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: e4f602cef28f1c859f29f44764aa97470416043171d2e6b457363b9110370e98

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c21ab25a84d2d4c57ed8086a81f643eec6156e0c3cdaaec56d7178ad788192c4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2008-12-16T08:15:43Z",
    "title_canon_sha256": "f7933fb4a88a65ac32e669360342d7343dcf7a26213da07def16bec8adec8322"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.2996",
    "kind": "arxiv",
    "version": 3
  }
}