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 0xad994d17a65ed29fb8a94c0f1ecacfbf7bfe9d21addf805343d7bd0c00091c8a. 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/cf57c3c2-557f-4345-997d-0c4a86e72f18.json and https://artists.proofprofile.net/proofs/artist/cf57c3c2-557f-4345-997d-0c4a86e72f18.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 0x1fec430626b40d73013371adff30f5e6f7a4c79b7b89db5635458e0e7ff3bdaf. 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/KRA341318988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c62cab6e4d23a4feefa80581c10d5c5363cae1e0f95ce1799d2d2aece4f5ef8. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/KRA341320895.
Love for a Thousand More (Original Television Soundtrack)
Prison Playbook (Original Television Soundtrack), Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90e24af32c82501bd43b8b544d1416e1b986e520d64549fb87f329cc63b6169. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/KRA491700395.
The Door ('Prison Playbook' Original Television Soundtrack / Part 2)
Golden Slumbers [Original Motion Pictures Soundtrack (Special Track)]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f90316110be638dce57d821aaa16241d644e7cbd3a844ef0744a43d0c13e019. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:36Z), 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/KRC661800007.
Kairos (Original Television Soundtrack, Pt. 8)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdcdafc6345a7bd2eceb70c857356576ccd571b78fc673ebf8e5d5b85a267f5. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/KRA402100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d0abe6db1d1af4abb0f8c2cd3c8ae1ad173709f607fbfac14d731e81174aaa. 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/KRA402100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731398b7d29b8bc9313e5274e7100e4ce06a297192126341677952355e07f744. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/KRA402100049.
Voice4 (Original Drama Sound Track, Pt. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c31594cbe37495241474b85f80cf708cc891c243b3b47b732602f3ef87c3c3. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/KRA402100163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f2c3a10dc10a7af5a98989f1d8d34b69f15bd0382bfa4d35df5084ebcf90a5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/KRMIM2337418.
True to Love, Pt. 5 (Original Soundtrack)
독수리 5형제를 부탁해! (Original Television Soundtrack) Pt.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29add26b554b1f833d97bc98607cf741b6f2933252860df4c3976b01c2cf348. 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/KRA401400263.
Prison Playbook (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d16cec8fb242ea3f7a75f5a88b7ad25816b604081c8a7b84dbb9e97f5e0872. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/KRA491700394.