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 0xcf44354d0a011e7149e0bc398eca1c060ef88ed3e682f4dfaca5f17908e87c7b. 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/2d3a4c8f-346d-4437-9a46-e2ec49b8a592.json and https://artists.proofprofile.net/proofs/artist/2d3a4c8f-346d-4437-9a46-e2ec49b8a592.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 0xc6723670f291463532878ec2fbee717b059914397f3067b9dca5b43b195c3b0d. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/KRA340920940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb8d627ac3c20a7030a71a2fbb4bd0b52b4e873b9d00ffdf2f718aaa3052629. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRA340921383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6cb0785236eb0c3a64121a3e3a065f5c53986bb1fdc4b6ac0aae125c3647df. 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/KRA340921385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b979bd353b237cd45e86ec81a52e644bae4a63cf0f8fbd47ed2836fa11462f. 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/KRA341751130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee6dbc16a7c77e56c173777bdc385d2aaebb2ce40d21e9e0e7385a0cf87025c. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/KRA341751131.
Jo Hang Jo (2010 Jo Hang Jo’s Emotion 2)
Love of a Beautiful Man + Luxury Korean Pops
왕가네 식구들 (Original Television Soundtrack) Part. 1
왕가네 식구들 (Original Television Soundtrack) Pt. 1
Royal Family (Original Television Soundtrack) Pt. 1
기분좋은날 (Original Television Soundtrack) Pt. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b8474cb65b6f6408c9e96a4b16e1ffbbfea9d5e0fcd5d8c971892b1d82f936. 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/KRA341445188.
The Best Wedding (TV CHOSUN DRAMA) OST Part.3
The Best Wedding OST Part.3 (Soundtrack)
가족을 지켜라 (Original Television Soundtrack) Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59670b1035871e5aa7e87b5ba32f5d065b37e690a1cb9650fcf329e2d87c2aea. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/KRA341523263.
Blown with the beautiful wind OST Part.6
착한 마녀전, Pt. 3 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8832e9a923bd59e6b1c08e7d7127e27e808ee6a1eb345cfb18824565fd6cbd9b. Chain 2 (Bitcoin): anchored in block 958399 (2026-07-17T10:39:51Z), 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/KRZ291806513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb463f54dc4ad43be12173430697670702b97a2df343212366d518880fabf2a. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/QZEKE1848323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162870c64204aa1f8d9960d1a388c767ecc1c12efc6c0611d4134c9d1407924d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZEKE1863637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60df1fb96e8aa08519562e3bd83f173c639fa1e5deab7931189743de1c221eea. 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/KRRAR1918979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed95ed5e5f8868efcf87c824878f76a6f6426a06cdcdc615b79b0f08a8e5fc92. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZEKE1918440.
기막힌 유산 (Original Television Soundtrack) Pt.2
기막힌 유산 (Original Television Soundtrack) Pt.16
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c0f40ef74ff8a5b60c1d4d780aed71e0169fecdcc758845a91c384a923216e. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZEKE2003401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3d733e05d27f0d5cb1e500a9cd6348cdb0d1f731b54d90db2ce3e3a79519e8. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/KSA012151668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c07d2d0b6befcc953d0ab9d4817391e55f9a2d0d03cdda96d304ec4c12f0c5. 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/KSA012151850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf943012713d8da986824fb21c541344fd7c9b7bd0bbd7eb8fb291a691335ab6f. 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/QZNCB2184904.
Unpredictable Family OST Part.5 (Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb288c39f9a23e5110a28cbd48bdf1f202f0de1edc0404d37d9b5776a99ce4517. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/KSA012375341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31efa8deaf8905419b3893cd58c26fa6de704fdd2d69575d19d23cd7bd0aeb70. 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/KSA012382608.
Catch Your Luck (Original Television Soundtrack), Pt. 10
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc225c4a693c9e57d7eb236937b397e588d2b338e07e487f7e7b37fef28683819. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/KRA252501140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fd2fe8eab9f2fc6ce5b5d49c21892ff39b187b4a9274693e781a4af965a7de. 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/KRA382001290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586e429f5dfdf4eec57ad27684178935628c552f64e42f8be949b4d29967d3f4. 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/KRA382000216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57d456f9cfb9618768cc34bdc30ca09220719ebffc3b930935e6649196042f7. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/KRA382000648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e3a70510d03e2b37797c0c0015d234bb7e6656cd7924099026102e06646eed. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/KRA382001097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fff2cd5dc05d8314e1d48f593ca30f2b5036cefea872a88e8dd97759cd4c266. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/KRA382000588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61e47772e46f4ca65636e4f0c4e91bd5ae9e5068939a4008330a0d826b78b3b. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/KRA382000319.