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 0x0e1023e928084a03257d27a83059ed696aa7a28f0e6bd463374b3fb663109f3d. 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/5e3e5a4a-8bdc-4190-bfc2-d9c7d49479ea.json and https://artists.proofprofile.net/proofs/artist/5e3e5a4a-8bdc-4190-bfc2-d9c7d49479ea.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 0x5822b11b705b6db860dd0ad6ce001a0c18588c07ca756f7a9aebeb177d10c936. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/KRB471501681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee849660e3352426925f05bf55948a9877a7f27597356e1d20e1b12518a7245. 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/KRA031212889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e300a677728aa8d6fe3053eab80f108ae9600d2585f8accfbaed5a29c91ee3. 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/KRB461700269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa056479318841c54f6b150e539a5809ee290819af5cf5c0e18d1c49d4ecca5e3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/KRB461700355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2cfe42a41dbdd98ca821e655aa39d916abe550d1c12a25fa2046312b2dab42d. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/KRB461700356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd89a584462a2879b50f4ca117883d1d10f152d8909946c31f30524b7dacf72c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/KRB461700357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb9e245cf9c1b958fc3ccc3639411d4845052247ba610fb3752477f87bba308. 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/KRB461700353.
Love Revolution, Pt. 1 (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3903055ee8f7f79a190ebfb70a54d4d8e3746abafaa3ec7833fbb65cbf859f7e. 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/KRA251700729.
My Friend's Romance (Original Television Soundtrack), Pt. 2
That kind of love (Feat. Ahin of MOMOLAND)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ffa53c687427c970a1afc058f3cdec148343bd83ae5a0d96906018328dbd61. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/KRB461800336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90fb88ca58a4b5247d410d6b45fba95dfef53c6d485cabd2e59e31de85bfc9b. 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/KRB461800338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a5fd922465e9e2f41ae3ec765f22ee4252b10025599f7f968f77f8c3e51e90. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/KRB461800335.
Matrimonial Chaos Pt. 3 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5f7b7acfe2658a0d808b34ddc3e9b7740752d3078ba72781fa13b475a083ed. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/KRA381801947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e53ced226bced962e01f4fb7440072e03f3e9e8e81290b3eaf845a1c0521497. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/KRA381801949.
Love Revolution (Original Webtoon Soundtrack), Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2285b8dbc399ceb8e47d207b76c44bc1bedf9140868d1d2d0e31bb51611defc. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/KRA381903277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad00f0d7224aa559fdce15ede1825c6e0a94d22814e36c1f974a2ef5a190fa7. 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/KRA382000849.
Under the night we were facing our breakup - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afe2dceedf5faef0880bae7f3d1e171a6ce41fd9e0261ea8d57bdcc6905b642. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/KRA382000856.
Girl's World (Original Television Soundtrack), Pt. 2
Girl's World (Original Soundtrack), Pt. 2
What are you doing this evening - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a44d26f2df697322ba82ed5a36b360e2d48cae15d82fe68b873a371c1dfa8d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/KRA492000569.
More than friends (Original Television Soundtrack), Pt.3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d64ba1f57797730fa2d9c60fdc3b7532afcd05924ad1a03904362b4d7c02bd. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/KRA382006713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2ec4062d1c4e49f165031a76bf59aadfe37dc73d05055244aed2319fe97857. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/KRA382006714.
Love Revolution (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39365d0f55349bb5c412fbbbf1eff850788a1cadbb83e8498e0b7dfefd02d561. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/KRMIM2123448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3f50e9133a1d7414d7ff77812863c2b59a912020bc124644d6807f3ef40a45. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/KRMIM2123449.
I think I have to move (feat. Mad Clown)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4594ffb6d2c6e09cb64fbcd3c8a849b0ff63f40df8cd267f819b212a3f5769c5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/KRA382163663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1d7c13a63ab376051fc6a94736b5827b413888cb3991aea62c2e1ff7bf5feb. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/KRA382204145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457d1b019366756daea94086ee1a4ebbb2de0ed3fc7f19a188938e38937ab9f7. 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/KSA012249790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20187319fb79789a9d91d512f1f22fcd0bc7e584e40bec4e31f02e33f27f56d. 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/KRA252301324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8279f4dbfd45a88c05da81f01b6611f06dd96e5275daa7f185c4f75f88204b9. 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/KRA252301637.
More than K-Pop: Korean Indie & Soft Pop
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11524539a0ba4aa4346bc252519b718a9196be9b09b152a42acb4af5f61a4d4a. 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/KRMIM2443371.