Pith Number

pith:EJEZF6XG

pith:2016:EJEZF6XGNASBP3WQWDD2EHUICM

not attested not anchored not stored refs pending

Positive or Negative? The Impact of X-ray Feedback on the Formation of Direct Collapse Black Hole Seeds

Durham), John A. Regan (ICC, John H. Wise (Georgia Tech), Peter H. Johansson (Helsinki)

arxiv:1603.06612 v2 · 2016-03-21 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EJEZF6XGNASBP3WQWDD2EHUICM}

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	2026-05-18T01:10:30.817696Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

224992fae6682417eed0b0c7a21e881319c0213b3474d411197d3fcf057e7215

Aliases

arxiv: 1603.06612 · arxiv_version: 1603.06612v2 · doi: 10.48550/arxiv.1603.06612 · pith_short_12: EJEZF6XGNASB · pith_short_16: EJEZF6XGNASBP3WQ · pith_short_8: EJEZF6XG

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/EJEZF6XGNASBP3WQWDD2EHUICM \
  | 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: 224992fae6682417eed0b0c7a21e881319c0213b3474d411197d3fcf057e7215

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "836bef7433e4aa7b5b021dd42978235556dd1b408a323a975c6560c976b039dc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-03-21T20:55:38Z",
    "title_canon_sha256": "ce3c10ab33f17b11dbe73aa4c6bee4026047118a898ce8ced718dcfae06932d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.06612",
    "kind": "arxiv",
    "version": 2
  }
}