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 0x9ed39ce17b6b1eee0d41052e59622e8c30135d16d111080fd374f996ee358a72. 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/6accf557-a809-441f-9725-fc5462a1f172.json and https://artists.proofprofile.net/proofs/artist/6accf557-a809-441f-9725-fc5462a1f172.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 0x46b48be533aed1ab1c71c3a7ef643ccc759747273dfa9bcdde612338d7b15e57. 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/QMCE32100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c033f0063c2e34584209375f512c1de88f870e5fa67e16e09b3d16a5ddfaf8. 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/QZGYN2400824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d132da3ee92fc61d0c1438fcef9b5dc58fc7160544db08a90b7f00269e2f6f0. 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/QMCE32000595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597b094974644762fd09335b7b43fc2cfb6f87376ef9d51548886b04a9057117. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMCE32000597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9844935cb049e57a54733d555044db5602a55c25e4d4702a1538b7eadf27ef2f. 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/QMCE32000598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ea63d4a91a0af2be6457bf3f01bd3e12148c4e2e6f27a000368faa8182bbd6. 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/QMCE32000599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76193b95795d90cd1c716d81851d9befdbb29f4f973277ea7b23c0474f965dba. 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/QMCE32000600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bb33eb9366cccb6c844b041e97e3953189c23896645cf633648d7162a02392. 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/QMCE32000601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e36c7a81165eee9ce119db286b7c9be710080b85faf48ef68790b8a731402aa. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMCE32000603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b75893ce252f9662990bb38edc3890aec5701d725f432dc47917107b15675f1. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QMCE32000604.
Biggest Opp (feat. 5th Ward Greedy, Real Taker & Yung Mal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17c74bb0819fc42984afc63f916891c9e2ea38837914e4fe97a30a3c136a0ad. 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/QMCE32000606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114855de3939689fd558d80a3b3880e0b4b68daaba9a0c33a6648db2ddb8ff18. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QMCE32100709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa0bacd4c3674c18ab18e28af0d022cfd942d78c9c35dce0fe222eba27c147b. 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/QMCE32000352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888fc7b8c8178b96079897a3c7ccc13c31d387ca642afd724013329e3c81429a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USUYG1292237.
Wit Da Racks (feat. 21 Savage, Travis Scott & Yak Gotti)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31395d7fac650273896b28b743791de11e71db193d156ba1f6fd9be14f083b9. 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/USAT22306746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb8fdab1950f046df17007c57bfc64dd49916a0e4ef3e85177320db3c7a8fc4. 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/QMCE32000708.
Explosion (feat. Yak Gotti & FN DaDealer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bde235d30acd4a6f8f9025fca680cc5b67e6d3f7e42f12c088547937cd662cd. 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/QMCE32100254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574fc73230c6e72b4aea525c61afcba114a1b8ae384fa812769634caf461deb4. 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/QMCE32100197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fddbb6a24b646c396b11d8ef2f982b3126df01fb7ee7b9276e78a7534d9b85. 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/USAT21501215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b48be533aed1ab1c71c3a7ef643ccc759747273dfa9bcdde612338d7b15e57. 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/QMCE32100022.
Get N Dere Gang (feat. Lil Keed & Yak Gotti)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab3c6b41f2d1f9052b99ac4059e99980e42da4e17e5f5436920f8fe05a729d0. 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/USLD91732935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef16fbf42ddf85da65c083890d7f70f46888068a76f4ae3e87da2830b6bd75d2. 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/QMCE32000620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e39faa58869a6a78da31b19391804ca297bc70b2ee3634456907869d1e877e8. 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/QMCE32000618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a8f242ef880faa686ae7043ad13bdb4354ec762edccf50a35d8ca14502eb59. 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/CA5KR2240162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1002b1af9c1018a6acb310641d84800f6156cf069d509375cb4e1debcc076b37. 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/QM6N21576677.