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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcc7acbd432df4cb5565bddf0d72e028c25b3f47ba22a3096968cdc1c5eba95. 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/243af40a-2fd3-49f7-b95c-25e8d583bc57.json and https://artists.proofprofile.net/proofs/artist/243af40a-2fd3-49f7-b95c-25e8d583bc57.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546de76db79014695e0469725d7d83457f5844df107fde3138d0b46ed19c96d8. 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/KRA301400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68169deacb18a86b2e631f20b50fa22b1f8b780519addea4972b04c859eccf3. 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/KRA301400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe099d0e0ba8ebbbe8d378793ae277235ebe3e9e09d5d9eb21cfbf3355a75fdc5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/KRA301400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccf547e30cf577a7e5a1665fb852452efeef204882bf6e82c7572ec498009d0. 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/KRA301400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96edb68957ed0cbb1e9eb69a8071f28ba9f45d61de60383789429838399b8fef. 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/KRA301400071.
The 1st Mini Album 'Rewind' (Hong Kong Version)
What's Your Number? - The 2nd Mini Album
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957edbfc691a97c8b194cc5b5c9f448b2053979938155999e6c13fa5e24b1896. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/KRA301600253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05145c57295a9a2b887b901584f82d1bbbba49c11e0db18e407519649d2b6eae. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/KRA301600254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7bcb90faeae86e1e70888f76bde0f65f8aff85ac6df29c39977c630f194ea1. 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/KRA301800599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec44c35f66bab9243f371cf1da26d67c40987d6347f7fa0c690c263b0b039f21. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/KRA302000336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba2532ce00254d6f01775eea7e3af0c67218885f45e890e94335c0bf6e8345a. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/KRA302300254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce67a416bc7e7a461516eec99f91957a640d91fd0f36afaa33bd72c839af4c7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/KRA382324165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f1ba64c46b76be599f88deb69f03d373841abed699c7d7b0f5b4b03e4b9ce5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRA382404045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb16d08368a281b84a71a31c519488522505e746c48e30c64730bfa1e7d7d5cf. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/KRA302400335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255ae7b4ab5a49eb19cbff8ac8117ed8547052eda073aece75c94e08fbbd9842. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/KRA302400462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fed21ed4cad20f998f5b70d5cfff69a3e7ffb9e57997d34b67f0959a8223b9. 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/KRA300811704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacee15d09b37f8faf1a7d56dfd41c482099f05837e6ee870a19208426cebabcb. 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/HKG731679390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2c0f471f1a8d5e25e761612161277012586b69104cc4027ab87dcd0ce86dfd. 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/QNSM12401390.