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 0x2b5e0e347c5c8b0e47b793c6dcf0e980527cd115e01d9818e65480df8f93fd03. 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/d11babee-70f7-4e83-85a8-950c2b9420e4.json and https://artists.proofprofile.net/proofs/artist/d11babee-70f7-4e83-85a8-950c2b9420e4.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 0xbd1c19dfb47b3c755ad59ee26881bc16980eacf3a7d91ef831f03980c09850ab. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/KRA031207686.
Cunning Single Lady (Original Television Soundtrack) Pt. 1
앙큼한 돌싱녀 (Original Television Soundtrack) Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d41bd250a485c2e0828b6ba0311a9eb0876991c8fac7205b05a5df3b22a003. 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/KRA381206471.
앙큼한 돌싱녀 (Original Television Soundtrack) Part. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab6b881579402b4667217266cbd9948a5b4f33b218ab1d5953e5f5532643bf8. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/KRA381211290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fff2dc1a93c400ae6205465dea1cac07c15b4967614e6002532d9a3f4b228d. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T07:27:32Z), 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/KRA381600177.
You're beautiful (feat.Louie of Geeks) (BONUS TRACK)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeccd6e4312420849fc40d4619f5bc591c8e8ef96d01d83018af6c8166520938. 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/KRA381600180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98a8b9dac1e273bfa3f8c0bab9a41af6cb522cf428f4c6d3ed02583f230d520. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/KRA381602301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f1a064a800e580d20cf0d56a6752b13cbbaee8de255c45553a848502ba75a6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/KRA382323097.
다시 만난 세계 Pt. 6 Original Television Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2de4cf64956d460a82c93fbf4e154605873fc21d45b5b0c3c1bb8f7c6a33509. 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/KRA381702029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaab1f845175de523d4f0040fdb65c89af605bbefe8622ba03fc878772a38a6c. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/KRA381702367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f785e9c5f450d6dab29894cfb36e751d77a974ddce7499d230eb4f67f1ce9fa. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/KRA381702718.
A Day Before Us Season 2 (Original Soundtrack), Pt.3 - Springlove
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f4db3570eca791f021cbf001f9a02100569bac324faa60e59087a89c2325b2. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/KRB471800542.
A Day Before Us Season 2, Pt. 3 (Spring Love)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5421a14062ca78a70bed50f41b3dd870b6944776c733d65a95b0551aa4e1dc4a. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/KRA381800001.
Sumchongsa Season 2 (Original Television Soundtrack)
Sumchongsa Season2 (Original Television Soundtrack)
Clean With Passion For Now, Pt. 3 (Original Television Soundtrack)
Be Melodramatic (Original Television Soundtrack), Pt. 4
Love is Annoying, But I Hate Being Lonely (Original Television Soundtrack) Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5ac9590fdecedfaf122a7fd723ac54612f30086e763f764c51d9ad9cb6e6cf. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/KRA382005458.
Come over (Bunny and Guys X YU SEUNGWOO, SOLE)
Today's Weather (From "Spring Is Gone" [Original Soundtrack])
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f2d7a759c931c462a7cffa9da861b245b5adc579656f4cf73986434f774ee5. 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/KRMIM2210443.
The Heavenly Idol (Original Television Soundtrack), Pt.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181bea34c01d6c6999534866eaa3032bef88241064b98328c843922945f9d5ef. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/KRMIM2333400.
Delivery Man, Pt. 1 (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6167833e36b4177dfc3991d10e4ba4a580ad3cebe96cc18e52fdbfd9199516f0. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/KRB472300348.
The Fingers of God (Original Musical Soundtrack) - Dream of seeing the past
[THE SEASONS VolⅡ. 12] <AKMU's Long day Long night> ReːWake x Yu Seung Woo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb60a101d900df4533ecfa05278c2859a14090a5e90d1a667f03592ceefc8191. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/KRA381702785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dab67853b279078a3f040b764068169259413768f98b10c53a0c202f84f43a4. 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/KRA492100253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66c1f192b51584202bbdbbbace005e2c93571f70bf47d13d1b14a1938c6fff5. 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/KRA381602501.