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 0x67df264dfb7bf18aacea22fe182505f4de50b10cb61448c3118bba358cd77009. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec358c4f-c0d8-4054-a4cc-07d39e4b3079.json and https://artists.proofprofile.net/proofs/artist/ec358c4f-c0d8-4054-a4cc-07d39e4b3079.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
베스트 축가 MR 반주 Vol.1 Best Celebrate Love Song MR Vol.1
K-POP Best MR 반주 Vol.2 K-POP Best Song(Inst.) Vol.2
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 0xad7e9279b5a8b9a4e6f1bf104124d2393c4f308a2f4ccf5bcc28c9b383ecea19. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/KRB451800060.
Sleep Music Best MR 반주 Vol.4 Best Sleep Music MR Vol.4
베스트 걸그룹 MR 반주 Vol.5 Best K-pop Girl group Music MR Vol.5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ba9f9b1ea0936e91024a3281e873e194564ee415db5d41a48513980b6a34f9. 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/KRB451800142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd51eb304383c544d1956d1a0792979e0f55f6b490e1c2243963e52846f0e528. 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/KRB451800156.
베스트 보이그룹 MR 반주 Vol.6 Best K-pop Boy group Music (MR) Vol.6
베스트 보이그룹 MR 반주 Vol.7 Best K-pop Boy group Music (MR) Vol.7
베스트 보이그룹 MR 반주 Vol.8 Best K-pop Boy group Music (MR) Vol.8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1664a56fe49ed6ece5e975d41a1cfb7a08c6fbbd879df584b6b3d128ca71edf3. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/KRB451900089.
Rainy Day Listening Music Best 15 Vol.14
Popular Korean Drama Original Soundtrack Best 15 Vol. 19
A Sad Song When You Break Up Best 15 Vol.29
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e820f77aa6bf46824257ac2241354b4a95c702b285a853fc56c46360b68a26. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/KRB451900298.
A sad song when you break up Best 15 Vol. 28