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 0x5770afb68cbe5decf945806b0e1d867d71c1f9508bdaef0071ac23b4ce780d26. 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/bf95fa41-4af9-4db5-a6d5-1f87f3330ee7.json and https://artists.proofprofile.net/proofs/artist/bf95fa41-4af9-4db5-a6d5-1f87f3330ee7.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 0xc8a7039342cb940e97354b401f560a3d53643892e599a80c98ef756643f53bd3. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/KRNAR1701815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cc5fc788a8154118581d6ea376b6ade57d3283a944e768a254f2011adb9b30. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/KRNAR1701806.
Brightest Star(with Kim Min Seok of MeloMance)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0c1c995063a09c04726593edef74dff9d33221b016b5705c4225e4bce5ebaa. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/KRA381800835.
Brightest Star (with Kim MinSeok) - Natural ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da7709edbb6d868efed6cc89422422ba35a991ceb939ee76de49dcfdc00915c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/KRA381800836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d9d101f737a537dad3cd01e0dbdcaa5e5cde2225b203a115f0efa449c059e2. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/KRA381800838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7a9b438d12a17ea0b4e3400b3714c51c772dde79bfde59d7d274b6f2f94c8e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/KRE892100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3fbd375b6d0c66b8467939dcd1215412719823fd27c11c783651e365709870. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/KRE892100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb151ba08ee574f564e009f18b3da61f38aa4389dff5b3530a2211c5652e9fa. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/KRE892100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbe3e74788bf48b2489fc1c705d67097c1602eaa9cd15766aa0353363215d64. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/KRE892100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b05f0292a749b16876489f523c737a69399f60ecf69ad81f5df77d56fda4bb. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/KRE892100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7a9b438d12a17ea0b4e3400b3714c51c772dde79bfde59d7d274b6f2f94c8e. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/KRE892100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc30e84706868b4cd2df6406808d83b8a060cc36ec2b4454e6feb3ab6de1c3e2. 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/KRE892100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe351c0954a0166b861773c3c835c263c2140fe3f46ed6d10248369da0831e213. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/KRE892100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa77f1e52eae79c84b0e20319ec04e2b938026016b8e6c0cbe388ed3145de142. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/KRA381701838.
Because This Is My First Life (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5138a4e608fdcbb8056d90ae745c71c563ad196bba000f1fc10c408289b1f3. 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/KRA491700273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96e4192b77621606c3e29f760aa69ef4cd975b14dca39cf7b94f0a795af4e5b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/KRA491500887.