Kayin can refer to: Kayin State, an administrative division of Myanmar (Burma) Kayin or Karen people, a minority ethnic group in Myanmar Kayin, Iran, a village in Kerman Province, Iran alternativ
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 0xc7be818bee79e435a469796d39c9cab1041d528856a78632f90e09eb0c345beb. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/52eaef80-0711-4f7c-b877-6d7c57fb116f.json and https://artists.proofprofile.net/proofs/artist/52eaef80-0711-4f7c-b877-6d7c57fb116f.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 0xf414630e7ebf9b142fec42edbbe03dcc43045340ca1eda05fd4210a090936ae4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXZPH2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c5e175e7e60414f2552219b13797ad5890908bd9ee97dcdad387ee82dd75d1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BX46W2100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7dd2f836f4720e9ba9c177e56ddb156006442fea1965df71738526dcbb5c86. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BX46W2100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94bc1b18b2dc554dea23bf96063754c2463c862fab4b60981921d077713029f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BX46W2100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3f6e8657f02d6a77a7cb1fd50ab3b7458dc2e95a6252cbb3b00969d5220c97. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BX46W2100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807ee54766b4d831cc5a5dd1ee514a21728edd45623d4c5a5836e63db3fd9e9e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BX46W2100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c981a30f75f882769751aa6dc79ff4a84ce624777fb8d83c1cd45195fe4ad8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXZYA2300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6037c0ec7c205cd345afb6bb0026a022a725f2012e25ddbc0c913b673c98b3e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BCRK02400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e690ef010e4635db7bc1aea45b1b7021a6b1807591d93b1962534d3dba88e9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BCRK02400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3f75a7f85374218862e1508ed3073c13c39c704a22c552ad3c46d43b71b409. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKRQM2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972f9be1fc6e716731e1a053af4d5b06342f2060919c1a68bc212aba640de72e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKRQM2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3477f6bca48daf50f78a6964a99b477b3155b8c5e7949f467d4c51fb34b9149b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKRQM2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0860877ffb592d7655bd8b372feaaee12b00e5676d653a730e1ea1fb315939b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BCGWP2200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6037c0ec7c205cd345afb6bb0026a022a725f2012e25ddbc0c913b673c98b3e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BCRK02400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c9851b205634c1748e9ac91ee0c7b3489ff4acd752c54a27f3394562d328b3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BXIV82376153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf100377eef5db50a12d0f38722cd636f689cb8967abe8595c54879b3b002f535. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BKEHX2300002.