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 0xe9285191eb9dc94bdb53768bf3e5ac501a954d404dede101ec3154f961e531c7. 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/b65bb216-1ff2-4e36-940a-012f6dd10030.json and https://artists.proofprofile.net/proofs/artist/b65bb216-1ff2-4e36-940a-012f6dd10030.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 0x25c780c077554fa44f08dcf09178bccc43a835901d8be1dfb84c3e0f17f6a7eb. 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/CAH682300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560f02b8bae4af9840f5f0b3628325a3256948c25bc14e8e6fadc6310737de54. 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/CAH682300155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadefdc8bb78703c610c65954cfdb85051a33c66cfbcf211e5daae7abfddf6f6. 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/CAH682300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502d898a48dc147e510b9f433bff6f142db9e86651dfdf4f9ecb329b825e517a. 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/CAH682300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c20ac2919e54c3f1f9da390c32b42f32d70308bb1127832bc7ed6910bd358fe. 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/CAH682300159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1303fd033d415eeec5564457857a14c078380fe28d32824727176d320a841c28. 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/CAH682100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd3393e7cfb147cfed3c6fc4f680507ca0623fb88a5a0be9dcda94c27f06412. 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/CAH682100085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8e133f765d158899b8e962a4fbdef95b22a8b0df5125475e50f87746107284. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CAH682100086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c866a3a4abc5cea6fce72f7817bd0fa0920b8ce5c91af555b69db9b2b4f04c4. 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/CAH682100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf77061bb0307ea2080b21665ad2b8c0aa201bc3156226ea23c951b28050b49. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CAH682100089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d95680a5e470675d3242cdf601a8c85423da7f3d8ead85302d865a1a06abe2. 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/CAH682000092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb573caf6d8ca4f40d64286a289139e87145c2f87f2b828ae12abebe8ab156a. 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/CAH682000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dafaafe46bd59cdd08902986093940e0cd95fc981aaf90238397292dda1ebf6. 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/CAH682000075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65977df0f2df3d9e0268de94aa3466dd300a7587986f17a09fe62402da5374ac. 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/CAH682000076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679a34a221ff8a5cc5f8a31ebb263d34ae7e9c54fc9082b8c475069ffb22f543. 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/CAH682000077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xededfccc6b41bc1c953d9e47ec83f40afd4db3b7e0654a6c69255bac7fdce196. 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/CAH682000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7c4d7cd29a1fc62c02389bf885032552e6ea2a5193732321ea092798bae9fd. 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/CAH682000083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd73bae42ca1e7f3bb5527b1e7160056653219f2f17fbaf0505c89e1084a0c35. 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/CAH682000084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e28dac83640aa4293e613bd880c5c5392be5383ec5834ef079c49aa7974b93. 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/CAH681900049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8dbc90c7138d2f1d4e6860b9d9bc82dea28953033edac21468eeb7d40181db. 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/CAH681900051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0840867bc71b3d584c91f638f66380c9a4a7ee5c7341e3e93459fd5db1cb6b0. 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/CAH681900052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1114449a680bd266e5766388719fbc78b2a16bda05a1e25d49df8b07013b9c9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CAH681900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0981d0f28e7f4e9f39af3e40410543c3f604ab7eb887a80b402c1c4c35a22faa. 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/CAH681900054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23240329d2510601f4e34709520496f76051d821753a7cba8e2dc414d714aa10. 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/CAH681900055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e67ba477f97c4b06b5261dd5066fbc604cad5109a802065b65a529235d361f. 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/CAH681900059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4765d1a0ca0be84497f5f635382aec9efbc861dec57f32dbfa402a4d35029f37. 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/CAH681600053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4384f390c093902d9218dac35bae2360ef62a922767641876acee8d653d887. 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/CAH681600056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631f3f4698558672381d8fc4eb12bcadd69b28fb15102eb8d1c3a25f3437d94a. 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/CAH681600058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efe19251858beaead0b4ffb790a81e62334ec0e59daac178b88192c987938e3. 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/CAH681600059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828b9617965a24695c1ef189542aeb9e84691f923873578f20626837dfd26389. 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/CAH681600062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ac2204d1a1cd3ad71c5cf694975062cf78d7b53bc1a86878359f6af704cf7a. 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/CAH681600065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06acbb42b980bcc61edf0614e49c87b5994626c99fee0bf15489cc45d2a14c3b. 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/CAHQJ2391331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd3393e7cfb147cfed3c6fc4f680507ca0623fb88a5a0be9dcda94c27f06412. 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/CAH682100085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d95680a5e470675d3242cdf601a8c85423da7f3d8ead85302d865a1a06abe2. 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/CAH682000092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb573caf6d8ca4f40d64286a289139e87145c2f87f2b828ae12abebe8ab156a. 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/CAH682000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1114449a680bd266e5766388719fbc78b2a16bda05a1e25d49df8b07013b9c9. 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/CAH681900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7928b593db2a7390f712e19449f39ec70a386bea8be49f6a361f38fdb24b0d37. 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/CAAQ11800219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38b8545e4e15692428a5d2df18e841d96a64b6604b698ebb327aae462ed1b10. 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/USUYG1161841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e469439d61ff0cec282e18c21203a6a1324e192a6acdc7f0c5cf7da10450e5d. 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/CAH682000052.