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 0x665b017bb8be17d733b1eaa0a6ecfb601d3540ce28944ca3c96cae7a80c23e5c. 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/0b1a8625-b970-4da6-a9e5-b8ab561ed007.json and https://artists.proofprofile.net/proofs/artist/0b1a8625-b970-4da6-a9e5-b8ab561ed007.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 0xd0e9135080534e9c19ba9d6f973298bc8d01bda19e40a3497a3150f88c5e0a85. 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/USJ5G2222501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff053ef18712ed2b6161d6618476cfb55039f9f934a2395ab41936a770c0ecc6. 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/KRMIM2207704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8d361e43d91b1b4c6179a53842222fd66d834a4f278698d5f748ea766bc11c. 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/KRMIM2021318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe11ef3948752f075ad3626482bf29ab983453d22fa769511b951512db5a585c. 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/KRC712000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879501d06b86e4238c8b7b2ea5c43fd8a89150ce78912617a0fe259a4b569075. 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/KRF252300304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876975d5c6394dedef1bbebe5ae9925cbd9427f79c01665aab75d117d58969e3. 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/KRF252300305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9970e8cefd1be7ebac866134f0dd81a5a578bd37a913465ff41d92379cb1d6. 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/KRF252300306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b84d3496e371ccadc9b0886c222ad903d01f9cc11b8b6902369b80c5109f03. 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/KRF252300307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24bb2e716d5f88fa6cbed1cdd14f6e3adce3150f8cb9916fa8bf128039cbf79. 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/KRF252300308.
Gave you all my love (feat. jibin of Y2K92)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc52beed7d765c10a417c249d3b48d16b1a5fe52f9f8da1b829b5715234c8b53. 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/KRF252300309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bdb402eaddd1c447bccb4bf426eebea9b44d4eead6fc7fc71c4a4c2a26da5c. 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/KRF252300310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a4f829fe6c972b5eefa14a98c29942affeb5832e783d7d30c0c6a80ac78bb8. 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/KRF252300311.
LOVE (a secret visitor) (feat. parkjiyoon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e8f6aecf002c59a068f4f5694bda74680500434e6744a3da64e07662bfe79b. 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/KRF252300312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a27126b8ab60d4de942ad69f666a1fa8aaf2a60ecf2bec3a7d23ff5a8602f11. 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/KRF252300313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf860ecde9e79397ea845cd069034c0ec124602f76e679382b2417e70adcd8e76. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/KRF252300314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62a0a706a93542c45d768cee28c64bc79d9e9e28db44c6214efef1739047fd0. 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/KRF252300793.
Smoke Sprite : Commentary (with RM of BTS)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21de70fa26e2ceb0347c332cf304f74eae4c8479ae5823b64517fe7ddf8cbca. 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/KRF252300794.
Till the sun goes up : Commentary (with Che Yubina, Hoonch)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacceaee168f170259f660b4a9d82a77354248b6c8fd951d88018f8f8864b3718. 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/KRF252300795.