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 0x8059ca53ff5b00415c5fde3c03f74d3f4baad7940735d48d03eccd1cfc0847c7. 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/0ba3454d-7610-479c-b604-ed6352cea65f.json and https://artists.proofprofile.net/proofs/artist/0ba3454d-7610-479c-b604-ed6352cea65f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Angel's last mission : love (Original Television Soundtrack), Pt.7
Love affair in the afternoon (Original Television Soundtrack) Part.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 0x92d352801e03ad77b01f0f87908b5d64f5b481138fe69fb67862fea7a4d3cfec. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/KRE621900066.
Love Affairs In The Afternoon (Original Television Soundtrack, Pt. 2)
Selection: The War Between Women (Original Television Soundtrack, Pt. 1)
Cold Wind (From 'Selection: The War Between Women' Original Television Soundtrack, Pt. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86db4052ac18c417d51cdae714c0ef857b6cb29f587180d52e1af65b1ad4d938. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/KRMIM1923650.
MOUSE (Original Television Soundtrack) Pt. 1
MOUSE, Pt. 1 (Original Television Soundtrack)
마우스 (Original Television Soundtrack), Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a7e6fa303035ae086e3d77c4db4da13e9322fae952cf2741d9e74384ae8866. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZF452014726.
ISLAND(Dokdo, Beautiful Island of Korea)
Sad Ending (The Forbidden Marriage X Sojeong)
Moonshine (Original Television Soundtrack) Pt. 2
왜 오수재인가 (Original Television Soundtrack) Pt.5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb688dfe142934486bcc01cf5ec979a7cc0c82d869cf9e135fe23087c42de96ff. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/KRF702200432.
Same Pillow… (Welcome to Hugh-Nam-dong Bookstore X Sojeong)
The Golden Spoon (Original Television Soundtrack, Pt. 10)
True to Love, Pt. 3 (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae513460114c6065a87b95ab6a85ae4f1224e41997999e1d0ea186d76d5103c. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/KRB472301273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d564fbf90e616495a2300c9d04a45408287ccbac8228e2030ea089a4b646a7. 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/KRF702400238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f148a8a459cefb2e1a6582c33eb34cf02a5d5f979b3724b8c194e715b5c794. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/KSA012355722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1398a767cf078dab55087d5484282286c04a9b67f2da498f4caab1b583dda2d7. 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/KRB472200540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6c957473b55a9f31f2c28aa4b95df5fca1b1447685482293ae88aee268e126. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/KRB472200541.