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 0xadfd6b6549ce36ff449745798e0509490f6cb26cc7fd37fbea07c06ec78da5a4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/62c3d66e-156c-49b0-8359-240548ff6897.json and https://artists.proofprofile.net/proofs/artist/62c3d66e-156c-49b0-8359-240548ff6897.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 0x20b6cc1bc2df8e8909e1946dc4009990004276b9a486d06165ef85c1c99761da. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/KRD451801164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b6cc1bc2df8e8909e1946dc4009990004276b9a486d06165ef85c1c99761da. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:43:57Z), 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/KRD451801164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37400d6a5686f1249eb63b8a6db5d7256a0d462a3846d6bbb582f4b0fc40aa6. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/KRA341315988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba21abbd338353082e139ac20f0b6d9b5d82d457df744ef7dce142f122cafdaa. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/KRA341315989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba21abbd338353082e139ac20f0b6d9b5d82d457df744ef7dce142f122cafdaa. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/KRA341315989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119575a0d8a91d2d097b44c4e3d6268dc04c425150214e23fdf9bd946bb6becc. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/KRY661300278.
Romantic Doctor Teacher Kim (Original Television Soundtrack) Part 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd4e9f7475fd1bc39704776b20d87bb12d23dad090d9188120b283ce5bb3dce. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/KRA771600041.
Rebel: Thief Who Stole the People Pt. 1 (Original Television Soundtrack)
Rebel: Thief Who Stole the People, Pt. 1 (Original Soundtrack)
Rebel: Thief Who Stole the People OST Part.1 (Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831da035da8489c9f4827b99fe3fb85273c40de129824e251ee0ad4334dbf7cc. 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/KRA381000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f205db45103a35d96faf067508bd9743b472284c03dfad372ccfad77175f797. 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/KRA401500663.
Not Bad To Be Good, Pt.2 (feat. Jun In Kwon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae82c1fdc04780d71c63b0ddd3d69ad7984b154787a2526f811842dc68d606bc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/KRC081400012.
Shades of Love: Korean Drama Soundtracks
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cb80aa7b36ba9589d7317d62648b7fdc4d7c5684e695de96b07dce68744ff0. 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/DEN961930705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326be0cf2ec288cf9b23d95132d1cc5d43d78448ed5729eaf8e99142fc455052. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/KRA381209941.
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