Pith Number

pith:HEABOHSM

pith:2020:HEABOHSMMJ7H6IGHVIR4KXQPIY

not attested not anchored not stored refs pending

Lessons on early structure formation from a mature galaxy cluster observed at cosmic noon

Anna T. P. Schauer, Boyuan Liu, Volker Bromm

arxiv:2004.08479 v2 · 2020-04-17 · astro-ph.CO · 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{HEABOHSMMJ7H6IGHVIR4KXQPIY}

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	2026-07-05T01:04:23.178948Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3900171e4c627e7f20c7aa23c55e0f460266f8b61d336710d352fcebd2e4bcf9

Aliases

arxiv: 2004.08479 · arxiv_version: 2004.08479v2 · doi: 10.48550/arxiv.2004.08479 · pith_short_12: HEABOHSMMJ7H · pith_short_16: HEABOHSMMJ7H6IGH · pith_short_8: HEABOHSM

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/HEABOHSMMJ7H6IGHVIR4KXQPIY \
  | 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: 3900171e4c627e7f20c7aa23c55e0f460266f8b61d336710d352fcebd2e4bcf9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35cd795ae6b3d8ca3003c906c89786a45578c3901a1aff97728bf711b43c0c87",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2020-04-17T22:54:22Z",
    "title_canon_sha256": "e0c224ed6e7694ac07cdcc42fffcb6dbd88b3b3761a851e19437cc886e29f678"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.08479",
    "kind": "arxiv",
    "version": 2
  }
}