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 0x125107fff50038862b3ef979a97e0ed3c3da2c8fee7d3f77967280ea4b6ef82b. 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/9b5ba468-8001-4892-879b-c160328bab3e.json and https://artists.proofprofile.net/proofs/artist/9b5ba468-8001-4892-879b-c160328bab3e.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 0x8d966a2912d4e93f4a30d1d6082104ec24d3c8b377b564aa085b7e19486fb782. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/KRC311800049.
내가 사랑한 모든 것들은 나를 눈물짓게 할 테니까 Everything I Love Will Make Me Cry
Everything I Love Will Make Me Cry 내가 사랑한 모든 것들은 나를 눈물짓게 할 테니까
Before The Cocktail Ice Melts 칵테일 얼음이 녹기 전에
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07447a0fc978017f174ecf279553836b5e665b8e0e8df615d0c73d516610d51. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/KRC311900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c9e1da33e115b429ba6b4f5265ac057b204b7caa50286e7ab7990af5be991c. 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/KRC312100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5acf8e752e98fd138827bc0447c3a8b37a033496d97aeb579c8b12e36594362. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/KRC312100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6e2dcef00b716e7d31230a702ea5cc208995b26f57909e64bd8ae9bdb746db. 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/KRC312100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b8b2997255b7aad9982f2b7f448bfb0350bf698baeef988059d5a95455562d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/KRC312100023.
Sun Shower (A Business Proposal OST Part.3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0042d444d38d31de4aad01787ecf3cc1f928af5344c704db268d6a702083c2. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/KRA382203777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aefa91f1d31773dbbc645ed2f26a3ba17e2c499380a6a24b6307805955a8f82. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/KRC312200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7fa460edd704a7d82e8290f76dd628bca803194c50c88bac0b69f5643b5da2. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/KRMIM2335624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f75e68ce04164ccb7b6847b7fa55893b41c9a7bf78c63672ccc2ff4d6d42684. 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/KRMIM2344449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0258c389ae9d2562aa90fb7e82a76f50832a67a1f386ed1ef7a81f5731c7e939. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/KRMIM2362255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f13028841a2dd3716abe3587b606c2a563f85b2059ec96aaa15a7dac07d1766. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/KRMIM2466443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9894bdcde4c2957a1c51b428bac53bd1f1aafae294b46c33c72ea3a54699fc0. 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/KRA382203776.