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 0xe5192bf84537b776ab028dc23388396d3df90b201bc530d37af95b2f097d8e5c. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/224cb8f8-95c1-46bd-9320-62cff10b3649.json and https://artists.proofprofile.net/proofs/artist/224cb8f8-95c1-46bd-9320-62cff10b3649.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 0x48e039b8cb217fc237b2e685de7bed70155480737947dfe20a89960760cf2303. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/KSA012242264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73651d3277ca9f2e5e42fe6bd21b17b4481df8ab9e701965ed8a414b1bbd2974. 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/KSA012242266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba90e8e10a47455da34474990e4104b8dd556716795a506abda63ca0f4cb0df3. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/KSA012227894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0d7df3e9c753b8b35117f5791250e994d0ce4225d2dfe48cc84732bb3d3255. 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/KSA002201423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541f99bc6ab2929fb822f5feffb372e5f75bc5fd86acb719b93c2e4d48a84bff. 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/KSA002201424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8157e3593a2c7cdf82154b78fc723e2a1e75a712f4e5b267f37fa2530906ec. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/KSA002201425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137c7cd9a49ab12dbc833ddd0fee807465170bcbfa199ed4f06783ada4eb679e. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/KSA002201426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7c3ecccfb158428ffb65dd9a176d00e0146116b1e5c79679ec8c6d24a3dae3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/KSA002201427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907db19ed525cd0b9dfdea582011b1a3ae319a347a04a01c8211556c813abc78. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/KSA002201429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3d910621ce2804e91207457ed47312275fd413dfa99959231faf45c08514d2. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/KSA002201430.
UK Freestyle (Feat. 안경잽이, 하회, 372, Bruno Champman, 노아주다 , 릴호동, PPARISKKOMA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb01545b7d30df97d0e9301103fa396b609a843d617695deaffe178a619c4d7e. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/KSA002201432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5739d810b626e17649ba12062d22bc2fea5f412bc54f6a46afd18dc85e7d75. 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/QMDA72439009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff3b1ec84544ec4ec126519e395ca754b0e74f3de816ae9ef2986bfe486f66f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QMDA72439010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e013b9ad5c56fcdcafdb13b600fbeaa336e09ba077f654a8e5dffb19533b1fd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMDA72439011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f794f59c082f741d787b5a22ce9da0b65d5aa4623b7fa1239747d77c7d362d4. 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/QMDA72439012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4f86faa6c9d85bfe5e7e650b290a22f55bae2eca643963e8fded096029e0c5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMDA72439013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29e6fba07fa2869e09a0e4a6f8c967e03beb3c054f026817911d28b3f4b2cf1. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/KRMIM2512510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aff59d919e4373e2fcd2b0269ae2342f517b319ab9b5eb7076ecd318ae26b8e. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/KRMIM2512511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa063dc4bce8ae7193db8d066e0697514e0212b2ed36268ce99bb5c4ba649ff7f. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/KRMIM2512512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5397cc18f36983a04de4d2320de4fcf2327df9a0b7d5ff86075f8ff60a116b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/KRMIM2512515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2d21b2334c99a271a999484fd653d49c3f348d4d06f8467abb801b0e356175. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/KRMIM2512516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd062d1aa674cb22c9763c71e7d1cdfaeed2cb0e209c3833064647e9dfc22046. 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/QMFMF2418571.
살아남아 remix (feat. HIRA, Kimo:L, Skyminhyuk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b267b4ab7534aca153a2132c51c28dd1f3ce50c82090b2f668f8386e66cdec8. 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/QMDA72415461.