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 0xa73572731f33a6e133f791f9298bdec30dcd521ba80f0f0ac231d4f8e65b7c3c. 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/1d06c419-8d62-4efc-95e8-3c4142b4ffe7.json and https://artists.proofprofile.net/proofs/artist/1d06c419-8d62-4efc-95e8-3c4142b4ffe7.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 0x454a4b40d66aecaeb630dc00bac44fe8dce68aa8c8c30bd329f240f2f9415ff1. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/KRA381204199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbe6c8e6af1d739660f5343460bf1924e897bab429cf7808a28f7b195e11bfa. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/KRA381000050.
The K2 (Original Television Soundtrack), Pt 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc148e8723fc08382e7508c74624c53336e878986ca550cf07d03a0aeb606942. 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/KRA491600728.
Live Up To Your Name, Dr. Heo (Original Television Soundtrack), Pt. 1
돈꽃 Pt. 5 (Original Television Soundtrack)
돈꽃 (Original Television Soundtrack), Pt.5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a2ebba49c64694a84dda0bcd3b12f48e6f03e9291df5694393b260d9b63394. 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/KRA301800067.
Kill It Pt. 1 (Original Television Soundtrack)
Welcome 2 Life Pt. 1 (Original Television Soundtrack)
RUGAL (Original Television Soundtrack) Pt. 3
The Golden Spoon (Original Television Soundtrack, Pt. 1)
Mental Coach Jegal, Pt. 4 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe80301bac4bef273c934055d3a7f33b4e26b19349623cb8c936f9689b0a1c13. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/KRA491600802.