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 0x9053f53abd48259f8f4fa08073e526c0ab31df207f3a28df164f2aa09e0c741a. 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/05fb3237-099f-4b91-8073-0206f49626da.json and https://artists.proofprofile.net/proofs/artist/05fb3237-099f-4b91-8073-0206f49626da.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 0x131819311e2e16032becbe7de2490b5e2f4357d194543e66372f2d260d935bdf. 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/QM24S1824638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa786effd618baa890818637ece60b94a3999658b4f17754006cfca1f8f750a4c. 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/QM24S1818095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7db6636b4564dcc9d67b328acf06f9bd4f73bc5bead2546264b446cc2078ec2. 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/QM24S1824639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa786effd618baa890818637ece60b94a3999658b4f17754006cfca1f8f750a4c. 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/QM24S1818095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d96015350cd9fefa3f7177005c1e859a5a8eb0ae08d31d08ea8a214d2c7181b. 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/QM24S1705077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdfd7ea588f82c83aa632b9b727c65a4dc4f9b690c8e2b144b95fa395f2ba32. 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/QM24S1704895.
Faces (feat. Pink Siifu) - Burns Twins Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5d2a2504625a96bb00215f55aac84709b2c632f754212326c2d8c434032d23. 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/QM24S1704384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c38f948bd1a58e47dfcff464b51307f1a31b94f0e21ddf16de9a2456631206. 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/QM24S1704385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992e993dcb8618b4d70fed22ab972bdb2ea3444c2f75ceb688a676b21fed0cc3. 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/TCACQ1682926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a63daf47de4607130424b703cd5e826d15cfb9ef13eeb41692b9481d73eca51. 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/TCACQ1682927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0745fbad47f6c6d12449a28a944a614cda5986a2c2d8cab2f28c0d740d397aa. 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/TCACQ1682928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9e59eefb424700d9b8600138fcf21143e21336dd6be8fef0e87873dd72a90f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCACQ1682929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5468f4eb77f9192900d055f043900f48ca72ae8c832a4fa7e1a7ab10b238d0b4. 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/TCACQ1682930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35d9c6f30e699e6c70f936a92365fc5867542224e4f14d1f5af6ae55c8d5963. 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/TCACQ1682932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8d6d7075c5e143c14d7a840882ded13489dbe1332f700a49968d6230f49610. 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/GBSMU3884206.