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 0x015f91145d759ce79a6c787cddd09fd3b9f47c074a061c0664b14e839d7bb849. 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/3fde4ac6-cda4-430f-8b8b-c373c0551abe.json and https://artists.proofprofile.net/proofs/artist/3fde4ac6-cda4-430f-8b8b-c373c0551abe.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 0x633c8c671243191ee1da45262bea2dfe11627496af79511a762dab67f391e810. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/KRA341670400.
Diary of a prosecutor (Original Television Soundtrack) Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bd6fa04e2e7f5d415df4d6ad4bb79aa1c270a89255b0dbedfcf331aa37668d. 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/KRMIM2011594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc898cbec6f1bf67ccacf46719399f34163bbe3ab930db494432f61c7d5249441. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:46:22Z), 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/KRMIM2012522.
Kkondae Intern (Original Television Soundtrack), Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90c6881e602b58f7907fe5eaa07fe6d595a38c36cda765c9571aaa1bd931956. 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/KRA382100759.
Revolutionary Sisters (Original Television Soundtrack) Pt. 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6199120405c9ec5adcd8dbf557e92e903937ce1d58d549325112fc0e16056a49. 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/QZEKE2029355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac55da4e24992843f6346559a4f32aaf9402c4dc5cd082e7dc7cf91968837067. 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/KRA382203050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e42be6dce68af249a2f9af40a4952aa273ec57cf958477ff9a7b2d5c5af2df2. 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/KRA382318842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb545fd06053481589884a37847f8ed1e9b7eb038e50cc681ca5435f222c249. 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/KRA382318843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fe5b10ff76a00b01c90fae2b57bd1a67083c09ab58fc78ca10007a8f5b056f. 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/KRA382318845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe288e50cb4a4af922e9fb381690dc73cbd62a11253137ad7e315ebab2d9af27. 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/KRA382318846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f0c35d1cbef28ac471916665537e2860e4326e25a6bb50c6b34eb06420145f. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T07:27:32Z), 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/KRA382318847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8372fd7893de55c6aa1452ff75257e1909a5b862af5c5e736f9ca7ed1a087c1. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/KRA382318848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719e0a8555120490c56f8a527f71ae6d348f9a19c0ea5ca41cbdd219a52a0c7c. 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/KRA382318849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c33106e2d3994aff8ea7baa87470cfd279fecd7a7ceb85df7a8e2649164288. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/KRA382318850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97681be7328909a3e24cbc33c2424ab97382d0587c1a01d3ae8d65c6a1f47387. 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/KRA382318851.
Live your own life OST Part. 2 (Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfb2a5c85048a1681b662f550a108afabbba8d0ec5ef9861ab7184313fe78d2. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/KRA382405272.
독수리 5형제를 부탁해! (Original Television Soundtrack) Pt.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b60619ab744cd26a08330a3351a41766484f839d91e105e76511a8c60c9093c. 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/KRA382504764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25231962ea60560a1940beac596bab50df5574118df385cad0f44777bff238d2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KRA382000016.