The Links is an American social and service organization of prominent black women. It was founded in 1946 in Philadelphia, Pennsylvania. As of 2025, it has 299 chapters and more than 17,000 members in
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e267f8795849c2fd03aa38b0c2c28f1af7f1a3e9904aa5f7c35416268f56603. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c59ef012-5c15-49b8-8865-ca5de3a52c32.json and https://artists.proofprofile.net/proofs/artist/c59ef012-5c15-49b8-8865-ca5de3a52c32.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).