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 0xad6cf2cfbcb5047f51f4f36b4a2d4c89c2584ecd286c818de8c4072bf3059641. 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/e296ff9b-b00a-4a24-b8b6-47a560024379.json and https://artists.proofprofile.net/proofs/artist/e296ff9b-b00a-4a24-b8b6-47a560024379.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 0xe0d33e13c2d447124ebbcc0c8045811f6f5a8ce4652e22cadc2842ef760bd649. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/KRB921937335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c25e02f9c22714022f6a108037f4a4e43d26520a658ec105ee6e19d38d8ece4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/KRB921937372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb71c6bdd2e894ac021e306afa4eac07a14982978a9c845f724a0cbb6931735a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T09:59:41Z), 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/KRB921937648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9245248dc7c1e99c559124177f244703b11eeacf58a7afca4f790a4f0dac2c73. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T14:03:14Z), 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/KRA080600037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa026c0e38b8d0b8893a2d7992fdd527b59a443aa64a6e56b31bbe5bee096fdad. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:03:51Z), 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/KRB921937327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fe97dcb54f7228699c7f344fba3ebc94030b1af702c525e29d9bff8ef161d5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/KRB921937329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5370bf0c824e12dd4b3cbeb1aeb86ad1a3a40302766fe208cb96bc86f1322118. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/KRB921937330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc174a3b88db4fa2bea143f911b36aa5afab00bd531c9fb1243646ddaa5f556ca. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/KRB921937336.
ゴールデン☆ベスト ヤン・スギョン
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3c8a8cecf34333ef793403e9d26ad58b3d8fbc1cbb61d8c19b5721f486d34c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPTO09024800.