Pith Number

pith:2U4EUKSM

pith:2008:2U4EUKSMBOKRBQCNBKVL3TJDNP

not attested not anchored not stored refs pending

Dark Matter Annihilation and Primordial Star Formation

Aravind Natarajan (1), Astronomy, Brian W. O'Shea (3) ((1) Dept. of Physics, Jonathan C. Tan (2), Michigan State University), Uni. Bielefeld; (2) Dept. of Astronomy, University of Florida; (3) Dept. of Physics

arxiv:0807.3769 v1 · 2008-07-24 · astro-ph

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

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.

Cited by

1 paper in Pith

Direct Collapse Black Hole Candidates from Decaying Dark Matter

Receipt and verification

First computed	2026-05-18T04:29:33.169439Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5384a2a4c0b9510c04d0aaabdcd236be1afb65252b0cff9aaa8cf639157f30b

Aliases

arxiv: 0807.3769 · arxiv_version: 0807.3769v1 · doi: 10.48550/arxiv.0807.3769 · pith_short_12: 2U4EUKSMBOKR · pith_short_16: 2U4EUKSMBOKRBQCN · pith_short_8: 2U4EUKSM

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/2U4EUKSMBOKRBQCNBKVL3TJDNP \
  | 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: d5384a2a4c0b9510c04d0aaabdcd236be1afb65252b0cff9aaa8cf639157f30b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06e126546dde2c07d42275906c23ecb6c37279eb4e6fcd60067d2eebecdd8812",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-07-24T00:25:17Z",
    "title_canon_sha256": "abcc306f0cb5b7024fece1a4d4c8ae982fcb0526223a00051214d742cc0f0caf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0807.3769",
    "kind": "arxiv",
    "version": 1
  }
}