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 0xf89e136fb22ac3386464891dcd6d21c7c008382f79031e0355e697b4a17612eb. 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/f1771939-f263-4e43-be8b-f0db5d861d07.json and https://artists.proofprofile.net/proofs/artist/f1771939-f263-4e43-be8b-f0db5d861d07.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 0x82e1fe40c7f9e6c937cd1efd8f41a6464decd56c40df77ff197df781e6ae698d. 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/US83Z2007081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4959b2e818bb70b1ee64a6a036cd661fbcec8a57324fc9b2abfb274b3e50459. 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/US83Z2007082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd4a192d72009b1a6e9c0b33f5e86aae7f5013fbb088b5af70f9f8ce4242149. 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/US83Z2038432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2833a6972941ed10d93a0907180f409560eba6121993939826543dd49305515. 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/US83Z2038445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0424fe4ac06650d11c14e1da1d301a5376deb8c3c8ec19d62ba1b08091406899. 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/US83Z2038439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34e6fe43a2328f8dc86c7d54129f70dbe1ae51ddfb28e4a5cf042995cbe4c22. 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/US83Z2038441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ccf3d3cb21c20c4512e6f61fc276c3e1ef66c33f3a44c8a5c16bd9da87267f. 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/US83Z2038428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd740e9874ee970c5b6239fd4bca385af8c16b36e072a72d166ed87cab66d332d. 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/US83Z2038433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee890187862e0e6dabca0442fad8dffb43752b71c507da365a87c89dff1a8896. 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/US83Z2038429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dda9a92316d9eda14937c7bb2153957a160186a73f8657ed0978b6c7bbb3f50. 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/US83Z2102719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab20985b2e0b46264af166371b38806401816fe50ee01989219807809ad2a1b. 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/US83Z1937180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6385aee998011bbff00ddb0ccc03558a8b602d55658a533840594cd61cb5c9. 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/DEH742164182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf75bce508cb1e80500d8b8b595c0998a22cb64f613ab70a09edbcb727dbf50e. 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/DEH742164187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe670cd0b2fe3e9d51edb76cace0e88823c9da7fe9cbb18313c7a4629d7beea15. 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/DEH742164188.
Under the Surface - Planet Caravan Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1116683987b8a656a6a51691991e32968d00912edefd0ce7b3651018d9c5073d. 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/US83Z2127989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e276fc54acd6395219457b7cc18146f69947a6f1ca3c1520e3449305635eb3a. 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/DEY471821411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b46c8b96f7eba780aeb18910d0d4a7510099f2c67066c8553f983cbba76460. 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/DEY471821412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d11c03af3608d518b413048d39f2be5d1293f65ea62adbdabbc38ea53217ca8. 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/DEY471821414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2104b575bae4e5958ab88017beada8dd075ea46c271f9d094f1550c10b12ed. 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/DEY471981985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47825391802b7b1c85acab62502cae1d20714bd02445470349fca4daf2a49f53. 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/US83Z2028642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4422eac1243a5c277030d6088a2deeb522d491244734a7d1ae58466fd827afed. 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/US83Z2028643.
Preserve the Peace - Feinheitsbrei Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008becc99ec125bc7d286da8cf9c32cfbfb752ab14cc8269c4a7d58f0ad0bd1e. 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/US83Z1804597.
Hug Records Compilation - 6 Years of Love Foundation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db11643618e54b380131ca239a614698f7a6f129b69318d48fdcf8bda2874f1. 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/US83Z1909665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230826f02691e3dd63742fd6c485a4d45a21da6b780afe39375f1dc9f060d1bb. 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/US83Z1909666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcc7fd450547402699f6b7381f3ca139479943adf4d1e461543e7dc0828e4ee. 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/US83Z1909673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe387c1ce133fe5c443467fbfeadcac77624c3e6960639a5d399e44ce1a5e1b14. 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/DEH741818202.