Pith Number

pith:EKBWM7M4

pith:2009:EKBWM7M4DAR5TXKI7RNFD4DTNI

not attested not anchored not stored refs pending

Essentials of Blackfold Dynamics

Niels A. Obers, Roberto Emparan, Troels Harmark, Vasilis Niarchos

arxiv:0910.1601 v2 · 2009-10-08 · hep-th · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EKBWM7M4DAR5TXKI7RNFD4DTNI}

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	2026-05-18T02:34:19.572330Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2283667d9c1823d9dd48fc5a51f0736a1db0df9ebc0d0df9a76edfd151a84bea

Aliases

arxiv: 0910.1601 · arxiv_version: 0910.1601v2 · doi: 10.48550/arxiv.0910.1601 · pith_short_12: EKBWM7M4DAR5 · pith_short_16: EKBWM7M4DAR5TXKI · pith_short_8: EKBWM7M4

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/EKBWM7M4DAR5TXKI7RNFD4DTNI \
  | 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: 2283667d9c1823d9dd48fc5a51f0736a1db0df9ebc0d0df9a76edfd151a84bea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c859d5fcd2ce6701cb4a05b50d4cd19204686917f9647308bbacae5cfbb9f3b",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2009-10-08T21:15:05Z",
    "title_canon_sha256": "0773cb176c8fac99da26508745e26c58c41912ec99213bbe0a912746b7b92892"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.1601",
    "kind": "arxiv",
    "version": 2
  }
}