Purwati (born 8 June 1984) is an Indonesian badminton player specializes in doubles. Born in Pekalongan Regency, Purwati had joined the Djarum club in 2000. Together with Meiliana Jauhari, she won the
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 0x29b8b8b663cebd8acdad2bfbf7527d0f718bf05ff9548070b86220bf464b636f. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/01dadbf8-e554-4368-b673-286e66eb23bb.json and https://artists.proofprofile.net/proofs/artist/01dadbf8-e554-4368-b673-286e66eb23bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0768fce902cde5f57d399f9843d7da4f960b160fa37f30e4fa10f587a596aef9. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X41443570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5acdfdd0ab2f9d1553b73c43fdb909f4994849c5650ab9076271c8e6104c75d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X41443571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf704347140a644f5ab6b65af13de6ecfa83483e59a0778995712739ac2e26a5a. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X41443572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2c455e0abc5f6769ae301678b1a5290f7d49160770ee41d1d49d049d1a3c33. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X41443573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2896f8184c6e5941912f6383b78289f54ec1413f15d1e99768e0505b601cc398. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:26:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X41443575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e076d3a2193194197af930ec926c3fbd93cf2aa5c633a03a27d64a2a4b4a3f. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:26:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X41443577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa536b0f8ff56aacc404a4e16777a1cd6bf70a5af99768b998689c422fb23a96b. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X41443578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1824ed7dbdf51d5a3a0a15451cf088fcc8fbcfd5c9f6b442e2deccad40cf089a. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X41443580.