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 0xdb56245c10cb09613bf0b75154cc9a3be615d2852024554c8bd1432bd0a57da6. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94c18f84-3da4-4b25-b50a-38f0f4b4956c.json and https://artists.proofprofile.net/proofs/artist/94c18f84-3da4-4b25-b50a-38f0f4b4956c.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 0xeae9062e932fe7c1487243a42522807aa5dd6daa923a7769b926097dab5470fe. 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/US83Z2237784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29905cbb9509722b30879ef436c4b6668a902c2b9d807b59afb2b06bfde8819. 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/CA5KR0003237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6512cb7a3cefe57b2b8fe289e599112ecf06038d283fdbd1679af6f603eb8ac0. 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/CA5KR0003236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c56e5ba0931191b5c67ad24df85feaae60260cbb6d832f3f2e4dfc662540256. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/US83Z2520427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74b0351a57ba0be51f614b051ab0976f528af4c422a3165ef25df4bb7b79d58. 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/DEH742505977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13e5aeb109b2580c134d0dde2d4f279fd18c435c29105bbce3dc1f40f79f36e. 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/DEH742505978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc94434ec1773ab117fd905359a7f4dd2416fb0388664efb6c7dd65bc4d0baf. 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/CBCP22500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e2ea2b0f2f64c57eac3ee11449daf9cd8fa024aa4accaf7f1586ddfb69ef7f. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/US83Z2502700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa06abaa07d8eb6a293a8c2f76e006f0f6ca48cb3d86b42fc144eeffd8ced307. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/US83Z2354087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4c5b394606159fc5ccaacfb5c28c1d77be69cc3cc505fe6420d830aa5f86b6. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/US83Z2354088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827a6067b4fb19fb57e0a2e25008b79e66fae6b4937dd72023a9eb71bf68be6c. 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/GBKQU2207219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba9c91613a4060618ed879208aa9cf434e6b673afd0d9381ad394c4ebffd0a9. 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/US83Z2489139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912316f8ee6e1b214f46a5aae2dff120a34e74066029bb0dbba39863b28ea45a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US83Z2505310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7662285c0348192d7607de55a4b8485ce0833b019f490e36150e7bfc041eee13. 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/US83Z2403047.
Envelope Depth - Giuliano Rodrigues Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc4cc16951fed2d57d45b5e10f6e4f3f6169daaeb4e08a91ef7f4abb7f160e2. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/US83Z2479498.
Mirage - Francesco Tamburrano Rmx - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb756ac171fd9e89bd6d4504063b59402fc19f03e3ac4d71e6aac1a9d25c8be73. 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/US83Z2499274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fa64620e76cb0c174193a03ce3ab419e17812af0129b028c65a0d910a64ae0. 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/US83Z2406221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb7021eb5922b6f75c7fad376e9c00e10f21ed628d572937b2879829d4185ec. 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/US83Z2502699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876dd79405005e91b761e6533311ed4a8be600413e10b22e90d0a58b9fa5b081. 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/US83Z2489134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34385403fb6af89b71bdfdebdad5c2ef66d17dca919cb55aacefd1a934f983a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US83Z2309267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a0a4fb55e8d0b80f19d80b19284ab3ba6c678341be22d8cea1350680266581. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/US83Z2308114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2275a9c7681ed8d8e1d75f622fa96cf78e6aabe1becfd6f2f3988c522e5a3b. 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/US83Z2322960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b404ec6020e9ff51d5c963ad575bcedb28c810d6deb9a22204bd1ca11c6df7. 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/US83Z2202887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe48caa2de200b674520a5da40f6cd48499412671180cd72828131c1172ce48c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US83Z2233618.
Cold Cloud - Tomin Tomovic Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44947316e6849d670ccb3b8e516d6224c7cfb39ec628a552ed92b101a319244. 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/US83Z2150707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd091e44f110a1ff0f467dd8eb9d2ffac6be88fdee476932a8fca3e4c899edc8d. 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/US83Z2239149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1f73289aed308594de24bb95a5b5a1b686c96c202fe7eb167b0203cb79078e. 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/US83Z2239148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20554d72685c3fe63c61205d9bdbe12948604d3d2d26813017c28129ce86c732. 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/US83Z2304892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0545e4d6121364b1f745b34254037d303ae60a69494a75c5cf988ddff277db28. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/US83Z2300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85469d33fd40a630aee9da36ec2f0288fea55996b11361de1814beec2ec262e9. 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/US83Z2300304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc4418098a436e37bab610934a0600712623f174e11edcb975a7181bd33b122. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/US83Z2315916.
Interlacement - Hypertonics Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e39ab9ee30fe7ba415b4fd144c9f6bb30fdd03fd5543a19c923dbf6a5c588c1. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/US83Z2329908.
Decayed Ruins - Dott. Santafeo Rmx - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b970cb792557aa62bccc03707bad6e67cc96852499f0a8cbc113064d69c80e. 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/US83Z2421684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99aad555ec77616f9c4c61d8578dfb3e2a4a95b555dbc002626db3a4d419b78. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/US83Z2241174.