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 0x8cc6f11e7acbbf7a50695743efb4ad6647c9fc5930518d48e056472bf30b3366. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0bac6040-9542-4514-93ab-a845fe588672.json and https://artists.proofprofile.net/proofs/artist/0bac6040-9542-4514-93ab-a845fe588672.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 0x12ad3e28766f3634b7ca9aaf0494b4f711c838bdbb9f1bc9264b0fbacbc92a18. 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/USDO19600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cc72bbeb6ca0b96a07dcaa957e6781084c841156d1392fe7da502110195167. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USDO10400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b61a01481ba5b538246ea3c849f58da0a7cb1c1a931f98f2e66158b063dac6a. 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/USDO10400012.
Suite Bergamasque, L. 75: III. Clair De Lune
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f1d8fed6acab3e35d8a97dfd4937489da817987551215f936b1d5b9219943d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USDO19900305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99b590b74369cbf9f6dbde22b3858acbd4bc231e7d523a8e0c4f952a1cfc4a8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USDO19500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8170f77bb8da133dd345a9b14c77c9f731b13050c81061cb256b5e8bafb2cd90. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USDO10600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e376e3fec7fe9f0bd08c4b40af12fb14491f631c4dc8364ef41e94dbfa5c592. 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/USDO10300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c9791dffeb0e8c162476a4d670dcd229dd34d3941f0a58a8044a015d5598ff. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USDO19900304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce3ea2e3c967756b94a64966f1c4b4bc38b0859555e9edab153e7f4710b8146. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBHTZ0531002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2a5e41ff6af2a9284ef3103995a3f12df2c0953ed7ec771d856030b06462eb. 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/USDO19500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470093990e5d1d2dddc57ab899d3f8d5b0affc5f7729f1227d165d3ee009bad3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USDO19800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14976750b6536a852fb83ca732ab709a8c351fa16b305756c144303c13739a4. 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/USDO10400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46be71ca4731dd3c0c53296115796e78b5f5e417f9309d9f79a0e77ca5778928. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USDO10400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22cd98ac872297141cfff597c44d8a1067af8861969316aad8e09b5068f9ee2. 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/USDO10300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae3cd39172bc6ef8b93232a897a3ed0762f1a96599402d4e6fe26656f3b56af. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USWS40303707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99b590b74369cbf9f6dbde22b3858acbd4bc231e7d523a8e0c4f952a1cfc4a8. 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/USDO19500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1652dc728ae277dd6289daf0b4dfb1e8c2ad1491e64f0904ca5ccaceaf5b676d. 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/FR59R2365259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4a78b5b36db611c3f5a666f5c016abba66fbce1964e2e4846df5434ed78ef7. 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/QMMQJ1300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc784f207a51ba6aeb0356647d149070545111386f6421cbc1289e19c01fba157. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USDO10200305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcc6c200c34b1f52fa36928777f17d4742491790177846eb1db3ecdb719ac5c. 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/QMMQJ1300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3b2851660521ea53dfaedaa3ba7705774c2b3358af9000c74ce895b2397ee5. 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/QMMQJ1300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768541fa95be265f4e84c7be8185a2a7391d9b11cc9bd5ed5684f993d887118c. 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/QMMQJ1300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbcaf129e5c53a52685b013f56b2217e70c23f32f2219c452bb6795ff948c76. 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/QMMQJ1300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14976750b6536a852fb83ca732ab709a8c351fa16b305756c144303c13739a4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USDO10400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef40828773a7e168ca0317befafbfd165fe4992c1ea3d93494473cf7cb95a38. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/USDO10400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46be71ca4731dd3c0c53296115796e78b5f5e417f9309d9f79a0e77ca5778928. 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/USDO10400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b12767c2f891a62125ca0b005f91f7abe84cee148d092436825f77fa884160b. 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/USDO10400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b61a01481ba5b538246ea3c849f58da0a7cb1c1a931f98f2e66158b063dac6a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USDO10400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd20590b12d5d96a9ba00ef200f82602af781c3da0a5e3a1f2a2b27d31d9767. 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/USDO10400013.