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 0x8a0c51133c49b8aef107a7f5c3e688b816e30cd24f0edfd78b4bd2815ae57ed9. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8fb9935f-f55a-4479-8583-99eeb90249da.json and https://artists.proofprofile.net/proofs/artist/8fb9935f-f55a-4479-8583-99eeb90249da.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 0xded9e04466293ec160bff0adeb0284602897f026f7066be8516d7374166702d8. 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/KRA381957334.
Is it just chance? (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb2328311e948673e7d5712d28158c0e07e1e2a7886d90c6d2924ce1015be07. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/KRA341300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6178d54470f63ef136c8cb0dd7ab3df39068e7e684a5e4948131bede4d75dd7. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/KRA341300077.
Begging You (Full ver. 2013) (feat.Hyobin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c631999ff2c5a005afe0890f911fb6958e902fa32c85bd7a05833188c70cf97. 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/KRA341642836.
The Spring Day Of My Life OST Part.5 (Soundtrack)
The spring Day Of My Life, Pt. 5 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81627cb89431cb24b0a22c351c846592d02eb0271c0e7c0545e7b00fcb384971. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/KRA381500458.
Let`s Start Again (MBC Drama) OST Part. 13
다시 시작해 (Original Television Soundtrack), Pt. 13
Blown with the beautiful wind OST Part.7
Ugly Miss Young-ae Season 15 (tvN DRAMA) OST Part.6 [Soundtrack]
Ugly Miss Young-ae Season 15 (tvN DRAMA) OST Part.6
막돼먹은 영애씨 시즌 15 (Original Television Soundtrack), Pt. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d2e2e51f1c7655bbf4c5f779181cc9151cf47b78132cb983f71cc5e83e12bb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KRNAR1710794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bd3af67e027fd151267cf9ccbef08c56240452714e87f09deea02cdfb02f4c. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/KRNAR1710801.
Look into my eyes (Acoustic ver.) (Remastered) (Feat. WINee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64783e3332f9ffd64af3df4c0040f9339886cbfd5be4b7e5c7e55169f03214a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/KRNAR1710796.
불어라 미풍아 (Original Television Soundtrack), Pt. 7
My Healing Love Pt. 4 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5963aaef32e2a929e6cc4543e5144c526c3ea8be5363fa920d82c62127f08f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/KRA381904217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d89e7b5eabb027541f8415c60b07af9e72fa31a983a164391c18156f54d989. 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/KRMIM2211286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617a9a41477ad9ffb762a272a31fadbd447b28714dc9f28c7a67d3fef7338259. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/KRMIM2211287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52eacc304f7eccc7fbbb173bb48b994570e3b5b5bac8d00eaefbad92a27d06fb. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/KRMIM2211288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596e3652e83786640cbc5d7282291acc90ae6c07125b416e397cc21ca79de0d4. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/GX5MX2204729.