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 0x18e03ae88072d735b6243ceb8a5148eb9bdeebb305b1c62a5b054e09c664fbdd. 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/32614de7-711e-4a35-8816-f193e964e71f.json and https://artists.proofprofile.net/proofs/artist/32614de7-711e-4a35-8816-f193e964e71f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
각시탈 (Original Television Soundtrack) Pt. 5
Bridal Mask (Original Television Soundtrack) Pt. 5
각시탈 (Original Television Soundtrack) Part. 5
I Can Hear Your Voice Pt. 5 (Original Television Soundtrack)
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 0x284dd41b868bfb177b8442f932949ef5330f06f8d456ba8086f5c0a603c73e19. 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/KRA381205059.
Medical TopTeam (Original Television Soundtrack) Pt. 2
Pretty Boy (Original Television Soundtrack), Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08350f8532c936486ac566a8b1c58dea9cd432b705dd6bc09d01cac47f601f6f. 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/QZEKE1808240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43b0cea72d4caeafb19c443c91eeb22b0286922ef6ee0d769a9e0bae5092f98. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/KRA381209406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5badb9d629f9f3c22bcfab0ab0a6f98582f76f28d66a2056c4c4b3e7e63e58a0. 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/KRA381210894.
You seem busy (feat.Jung Ill Hoon Of BTOB)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7ccf2c196730ee64715f26a42aa511da6a609669f0073fa21baa7e99faeae5. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:27:39Z), 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/KRA381700182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bcd56631d95f9e9e043440744646a93003c9a15fb4b1e381f7730824372e3c2. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:55:02Z), 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/KRA381700326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4566f060b46c09652a4e26cd32cbc4b56ccb059a7a237bded24b22a38e2f11e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/KRA381800146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cc691489cc126ce4ba90d7ce8101067171337981a694b45fcff13ebe345df8. 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/KRA381205149.