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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245134b6cff7c28e559e08973ced530b766db44c46e388bb71d9b9545e972774. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c738ebf9-db7c-4ae9-97be-d20153263304.json and https://artists.proofprofile.net/proofs/artist/c738ebf9-db7c-4ae9-97be-d20153263304.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b660d0439853fe97b74a65fa4a78532a9a7b0d6b2b41c641e240745e78dfcaf. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/KRA381952237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1eae6d8c0fd142cb3df5676d950900e5eedb891c6b5a5e5b1361af1ffd0569. 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/KRA381952245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa105ce39e9de7f8a4bac1ab416e3c51a6524773515048a53d4a156da6ad94125. 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/KRA381952248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5864414eee03eccdb0096d94535f73f9244baf0e6cc12aa3139a4a2add92a92c. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/US5TA1500255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5864414eee03eccdb0096d94535f73f9244baf0e6cc12aa3139a4a2add92a92c. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/US5TA1500255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccd90490d750f6a334217d210c21d5133cfa70f359f807949fe154d2060bff5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US5TA1500261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd849a6515145ea5d8830ca177a57c88f4f9364344b7e8e6bdc1ff7de64b9c5b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US5TA1500262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9ec192ca73825357aebc65993fc8f9e8927b07150f65f0c6c4405a9870a91b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US5TA1500265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b7570ff962905b11c7106500f620df2c70c30db3eaeea541f5f36b976df96b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US5TA1500268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbaa1973c684112ac1d4dfa8d7c7b5d6e2381451d72affbd915c879d737ae106. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US5TA1500269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bbe0145beb5c7a4b9afe83a93432cc899bbb101f4e4fccc5943b56896568ea. 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/US5TA1500270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e1c9f26f42caa9f1422d3f40585a0d9a11c68008d209228af52b79f0f24764. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US5TA1500271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65673a535a182b4dd6310140cdb361eca499b79799b4f6bea8927a718dd5298d. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/US5TA1500260.
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 0x83c5a27005fc8a3b38d6f915edb7c4d5dc1bc41301a2dd9c41413e2e705b378b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/US5TA1500263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18707e208da3f72632b89404323cb010347b7d2ff634489f6cd1b5b255683e8. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/US5TA1500264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8354903b3f28b94279a72ee6db0011155f36b1b1bc50406aaa3186ac9b0788c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/US5TA1500266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e48b2c36beb1e0f4e8d18f929612258bb19f7481e24a067c05585e0858cc50. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/US5TA1500272.
The Story of Our Lives (feat. Megan Lee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ab54530e8c8426c74e347bd1a5ec44101c2b9e79860114e6ff3b11b3f5ad16. 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/KRA491401271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23de27b6ee56e07df02b0dae990f9ae9cdbdbe887d15074ddbd67e4426316dbf. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:33:49Z), 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/KRA491401273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba89e0cfcc8a5477389ad47a8f00ca68b0ac0c41e0ba6a8b13b1803425a383c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/KRA491402125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf935eb4d6a04fc44fb7d7d27fb2a01b6aa2a583dcc89497919873ea3b5c4baae. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/KRA381901346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53d61b4bc8a62b9d6d86680cec422ebf0b947697d9681035930cf8680783c19. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/KRA381901347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192f4bf8b2fb73b8fef38f3341122bd7a844b57b541dd863bfbeca456e4faeec. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/KRA381900106.
So You Can Come Back to Me (Prod. Yoon Kye Sang)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d911f43737c493147f20a26ab77faad40ed56547c653d848f730598b5eca296. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/KRA381900109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c2897e895cbe84bcb7d7e2ee9dc43e651867dc4bfa189781f8713c95b24cc5. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/KRA381900110.
브람스를 좋아하세요? (Original Television Soundtrack) Pt. 2
Do You Like Brahms? (Original Television Soundtrack) Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bca6cd8e25fe246a9a33a85ed1585bc2af9a5e3093377e16fc68d00b1ce5c0. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/KRA382005354.
Do You Like Brahms? (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73760d6ec4322ac33520986acf276e592c8906651eec9c3f76919a3520c9c15b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/KRA382005353.