Pith Number

pith:3PYIBYRG

pith:2021:3PYIBYRG44YRQKF4GFZIQFHTTS

not attested not anchored not stored refs pending

Detecting and Characterizing Young Quasars II: Four Quasars at $z\sim 6$ with Lifetimes $<10^4$ years

Anna-Christina Eilers, Frederick B. Davies, Joseph F. Hennawi, Robert A. Simcoe

arxiv:2106.04586 v1 · 2021-06-08 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3PYIBYRG44YRQKF4GFZIQFHTTS}

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	2026-07-05T03:08:32.039582Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dbf080e226e7311828bc31728814f39cbb6cb00166cb29452e7b9b465b2e6357

Aliases

arxiv: 2106.04586 · arxiv_version: 2106.04586v1 · doi: 10.48550/arxiv.2106.04586 · pith_short_12: 3PYIBYRG44YR · pith_short_16: 3PYIBYRG44YRQKF4 · pith_short_8: 3PYIBYRG

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/3PYIBYRG44YRQKF4GFZIQFHTTS \
  | 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: dbf080e226e7311828bc31728814f39cbb6cb00166cb29452e7b9b465b2e6357

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "107dbb66952f2f9abc0371b54549667b49ce181c5c64c992b25ee7b70c38e0ef",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-06-08T18:00:00Z",
    "title_canon_sha256": "933e639fafce071f044553d03523635414fc559930803b8a108989e0e66c6001"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.04586",
    "kind": "arxiv",
    "version": 1
  }
}