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 0xf0be9dcd2e876f97f0da9aeda01ee7c35a379b7987d5201e701187bba2aed608. 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/cc451e7d-e879-457b-84b2-0a7a977370ce.json and https://artists.proofprofile.net/proofs/artist/cc451e7d-e879-457b-84b2-0a7a977370ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Voice3 보이스3 (Original Television Soundtrack), Pt. 5
Voice3 (Original Television Soundtrack), Pt. 5
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 0x2700ac032e13d3fc5922eb4ac5d63c9101429c0f994736f6052c84d15e64ae83. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:57:29Z), 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/KRB462000169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50336a458931453afd8ac692650dc19cb0a0e0381f214fa4a99368b7801c5710. 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/KRB462000170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a9e2d975779b40284e6864a6aa3312191b92ae571feb4049e544c7a416bde5. 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/KRB462000173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d94f30c71512c661128bba326c74c0c033668657c295f772336a8898b28805. 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/KSA002100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa651519ccabd2f6acbc1475dfcd0c45bb30386dfb6a560165f18ee749a9cba5f. 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/KSA002100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6330009670f7f1154e6c4d85286148f372a0fad742ae24a6d9e2d6d3b4bda40a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KSA002100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64a5a6430c8365829b4ff357536e4da8cc81493cc8a700dd2c09f430ffedb11. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KSA002100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e616debaed0a012c383cfb41be8da612e163e8386142ef244d363e8cf29bf1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KSA002100077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f87b12a3b745595b765075324bcae9c33e29c16b5ee43b933332e11abaffee. 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/KSA002100078.
Net, Trap, Launcher, Capture (feat. YANGHONGWON)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174aa5e408f9a57e9b2e77ca637f81ba0bba0ec91430fc6c6b0032626a75dba7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/KSA002100079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffc15c7e0a311a3fde8ebe5bda74d34409bd5dccb8be28e86f692485f03b119. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/KSA002100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90560fcdcef544f1853bbb5f383c3bfa497f034c84bb6ebfc2f777e07851edd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/KSA002100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf750704322d25151fbfa4b8322320497e7e1a3a455f3eee56c0ffff4145c2672. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KSA002100082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2309a15c2705e2b265b10a12af7ef7dd2e52daa94b4726a8ba7ea9992cfc8638. 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/KSA002100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6330009670f7f1154e6c4d85286148f372a0fad742ae24a6d9e2d6d3b4bda40a. 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/KSA002100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4be7336bb216db3b0ead6f927a0d11c946a60279613a695fe5253a019ccd4da. 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/KSA002100724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994b4c04801d03d4177e484d499601e662d7e7514427afb6dc5a02a98ea33d07. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/KSA002100726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5748aee7a6b527dc6730848641c0646c350d13654b75c6ac90132d6dc90a0177. 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/KSA002100727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e47ba75fe192bdbfd6fbc1861b4e9848ead02bdd79069c492bee80e6c01eebf. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/KRMIM2217476.
Stand Up Underground Challenge EP. 02 : ㅅㅅ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60656ca5de69bd9e72003914a40289b174e567ece1f82dc3fb089dcab350a63c. 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/KRMIM2250399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9405436bd564a68da3282a39b94de1599934810f8881756f076cba90607fb6d. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/ZZA0P2212155.
Weak Hero OST Part.1 (Yeon Sieun's Theme X Unofficialboyy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfdd307e63e471d20aa6f78fff38f831b19081a0d963849d1355c8bade99cef. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/KRNAR2233565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0872282e5f5c03640bc678e6f32e157edfaa707612653d615d13525175a3e39c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/KSA002100605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe742c49650756703c841be720e828b52ec60b11d78d78d28e5e35e354e1c2f3b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/KSA002100606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28845169c85ef72f6fb4124906b0d0ae734062df98fa04d440097df6696dd0f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/KSA002100607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73e6781f67d156d9c43606afd145f41cdd5d60a76591c7af4f69ccf5f7a665a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/KSA002100608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb59395f0db19fce3969571f9d41fccb4647732ae0e16b61240fb220b174d24e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA492101245.
Ouu Ouu (feat. unofficialboyy & Lil tachi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51526d62d25852601f91ddac3dd746cdf060a4c8bb584d8eee97eea49ffe095. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/KSA012153814.
Urban Area (Feat. unofficialboyy, gamma)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669b9fe1a77119d38a9427796331d0ff88b3db7dab97fe6d0b5f49afeb7ba905. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KRE132200006.