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 0x04179036cd5dde4e53fe2f276f057a391e9e94d34109c026b1c353d1a2c944e0. 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/aea85a76-0dab-49fd-a917-9493c824ea8d.json and https://artists.proofprofile.net/proofs/artist/aea85a76-0dab-49fd-a917-9493c824ea8d.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 0x00e9048475bdb2fbdab3787bb0bbb4ec68f44dd57d6339c62227d95f66485557. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZK6G2376248.
Williamsburg (feat. Deon Senia) / Shot for Me (feat. Dallae)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b62b00ad6df1529d5e5c611c81a1bc4bcd7c18a7e8aa6838cdbf5eaaea19e9. 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/UKQNV2400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be60bb608bb65cc1917f853ecb5ff84daae23dc3e586d10abc4b30bcb2f8f91. 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/UKQNV2400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05fb627ec9901c0994bb23a035bacf299746d9abca4ffb01f442928779cb8ae. 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/QZDA42470009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec1e9dd2ad4f38b13aa6cdcc376f21ca5dc5b330bdb2440429a28be6dd0443e. 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/QZDA42470010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db596bcc398a1b2068405bef56e19e2e8fe977579bd84bf14f8d609e816a1e9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZWFM2355029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c3f7e8bef4c941683ecc671436eb91524628d611c6bad864b1323d51f35dc6. 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/QZTB62383123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27daa5e29965898f230a50c45c2f641f811fc2b94bd5818643a5413031bbc6b. 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/QZK6N2350720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b602d97372b322807096bf7a80886f7e9c8d564dfaad6319700cd1528eb513. 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/QZWFM2356214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600be8f88e180e05cc7d0d69f063ace9a6e9bbaf5ad2004d6e025021f807e018. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZRP52247337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47706c0a1de45a78a8834e319710fc166a0bed0f0fefdcfbd1f26e7afb3efd51. 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/QZRP52245709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b620e3f3136d9b70c99b385ec8ee63f492eaa51bd52ca671f3a80c18de84de. 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/QZRP52242748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f0fb63bb3e226560cbb6456308f92d3e31702caead80f6e5ecf85948957864. 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/QZFYZ2278994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb09cfb2cd9734623e882bba2c9754966a6b3b5d8c717cc46b82343acf09fcc2. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZFYZ2276581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4129502329bbedba41d2820a999003cc5a1e3862899d5ec4366de6c35c05e2ac. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZNWZ2169534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe442c86a90358acdfbbb1a8963e68bb38c5f07fa24e6671ea0c4485590e0d432. 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/QZNWZ2169535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c83b2a70ae7a9355d1de51e748d65102f8849c64796b55ce9ec5e525b9a67fc. 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/QZNWZ2169536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2effdd4c2072cd91b697fa46f25ae6eaa7ae4216c7d998313342fc4a86ef4e3b. 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/QZNWZ2169537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d0b64a7bc1feb4f68f477b2399f7383df04de3246c27ac3fc7e101c0828d95. 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/QZNWZ2169538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e6eca633da2287e257d79836667c4014b1e5070f474633fb293f08d671a6a2. 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/QZNWZ2169539.