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 0xef521bfbb3677ac29fbe0e04713f783c0181e092c41dcfcf282e2a1f082a4fc7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cffb1b7-43ed-475b-ad10-4ca7faf910a9.json and https://artists.proofprofile.net/proofs/artist/3cffb1b7-43ed-475b-ad10-4ca7faf910a9.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 0x1fec1e06ed7c1093047600b0e1e0f8b8288c64e4f8eda5fcd3e48546bd11e382. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCACE1562769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf4ff53d9bea31f78e9352df96d4150e98d0ca1b2b259e854f388bc5d58a7f3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZ5FN1818689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff760fc4b382125541924ca20ef5c3ae502fb7a7be9347304825ae2cfdbe661. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZES61933948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b6d114cc99b3d0ad5c1a895f21373cab20631742fd5e4a49fb9d8b35d3e757. 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/USLD91735338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e5934d7a1721a9b75226f427542fccf5bbde903cd8bbc3d8f46fa8e3471712. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CA5KR2443977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ebb3e13d930b3c805c05ebc4bce7afad4dd461345c237c7c46740e6081f32d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CA5KR2488926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef41f86b4486111997bacdfbcc6bca4c6ae64bd1fdf5bd01c145d5787817c72. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZXH92350313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe720fc7ace0aab75e02afb13bbaa9fab7c25dce459c2fbac30e7cf685fca8792. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMFMF2462875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c495ca6e61ce4e315ff297a84d4080b956c5dabe421a06d5306db5a4e0a72d. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZXH92350344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d9d4e61bf4bd262692abeabd6a8667035058d92281847570b416a368303d71. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZXH92350345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce26c45dd86a896f6b347b9b791a4c8eb9a7f015843bfec918f6e4a76588cfd. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZXH92350346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7257106981cf71477b40f7edd71e30ea1bcb3aa00e5ea4ccd19273b44ce15f15. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZXH92350347.
Every Girl (feat. Necessary, Jhonni Blaze & Miss Mykie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272b41e7929d4f02e2371311987ccde4b72b685f6d65ad33863c23141a5777f3. 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/TCACN1672180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffc08f545ef33912fdb15fc37b37402cd1ffe12fdddfa7088179204cc0a4b96. 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/USA2P2134011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffc08f545ef33912fdb15fc37b37402cd1ffe12fdddfa7088179204cc0a4b96. 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/USA2P2134011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdef4cd9f322b1f803229c577544a6e22689a2a580dccc35aefd693f1022a1a. 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/USA2P2314981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdb4435d13bd9c2e7523121cfa81859bfa67fed8348ffd333d8a33c5d8c325a. 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/QZXH92350355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc4227100af082b83e0313e5422b1cbc38a9ad9e49635783e98b68fac509efe. 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/US38Y2502094.
Where Is The Love (feat. Conway The Machine, Sheek Louch & Jhonni Blaze)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e273f4d390551116ee4983e0899577aad21e5abb4e131f3e5f5e1d5ceace75. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/USUYG1340811.
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