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 0xb142730133cc4b586600110eca025386ee068878ecdbf4a9f716522a8bade0aa. 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/aed71e9b-1c17-4ec6-a3fc-a868f5cabb29.json and https://artists.proofprofile.net/proofs/artist/aed71e9b-1c17-4ec6-a3fc-a868f5cabb29.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cunning Single Lady (Original Television Soundtrack) Pt. 5
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 0xfaa2bba62e6170943da369cccd444aa429a8e6c858493b555c100dec057c7143. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/KRA031209067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eef7d921a5351a95cefdc0e0abc49ea1ae11618712f7f43e3c8e7590d450fa7. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/KRA031210656.
Madame Antoine Pt. 3 (Original Television Soundtrack)
Madam Antoine (Original Television Soundtrack), pt.3
Madame Antoine: The Love Therapist OST Part.3
김과장 (Original Television Soundtrack) Pt. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3012941bfcfe2545b52e4031fb8faadb397fd03a4ce9e19df844ebdf09fe7e51. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/KRA381700435.
김과장 (Original Television Soundtrack) Part. 4
Black Knight, Pt. 5 (Original Television Soundtrack)
흑기사 (Original Television Soundtrack) Pt. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57600a019ad9ab9dd242f4f773724232336c2ea0d108c0e123535837e93de53. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRA251800001.
Cross (Original Television Soundtrack), Pt. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bc2959af0e837a2d21622986a269d67c94488d7bd3e06727f993a3c4363c2b. 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/KRB471800762.
Suits, Pt. 6 (Original Television Soundtrack)
Are You Human? (Original Television Soundtrack), Pt. 6
Are You Human? 너도 인간이니? (Original Television Soundtrack), Pt. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5f8c37ed3ccf6bb3e1cafc61ef46a818e459044e22ffa85149ab444ba4836a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/KRB471900533.
[Vol.43] You Hee yul's Sketchbook 10th Anniversary Project : 23th Voice 'Sketchbook X GB9'
Born Again (Original Television Soundtrack), Pt.4
My Unfamiliar Family (Original Television Soundtrack), Pt. 3
도도솔솔라라솔 (Original Television Soundtrack) Pt. 14
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394b27efc8f9a9c4820a107d33cf7206c572e13cd8d95852a4f4b4de6f1440f5. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZF452010291.
Only you (The Moon during the Day X GB9)
Again my life, Pt. 5 (Original Television Soundtrack)
Please Don't forget me (WEBTOON 'Discovery of Love' X GB9)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05941c825f56e4abf6696bb61d3b6a26e0aea7a49bd3242c96580fb50918f563. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/KRA382321193.
Moon in the day, Pt. 4 (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b91245eca17cd6d69a30aea6a87ec1c72e48e48e18ce7555509e2b8d9e414b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/KRMIM2422193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb243fe2770feeb9c61f7c6900602a33461994d0dbda094592cfbb811cdc358ac. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/KRMIM2479027.
Under the Starlight, You and I : The D.T Project
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dbf7d3df71ca28d41f5305cab229c32d74b270747bad1e468d9d80333f078b. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/KSB012328767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26767eb388d5b27f46fa27b0b7b4b4012702ec704256c5a24fdc71de4cab98fe. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/KRA341747863.