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 0x03f05327c911c17768ab5baaca76a70b59c54b1404e47272db05b0d86a0d4e76. 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/403e2d57-c343-4741-8297-09655f2d4acb.json and https://artists.proofprofile.net/proofs/artist/403e2d57-c343-4741-8297-09655f2d4acb.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 0x2e696c58112b3f947e84ec505757241aa5bdc46f498c595a2e60d2b29ab186c6. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/US23A1579230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94acce07bca540f02e5c4cd4e3ed9f0f08987964b85998806c7380f8eb1941b7. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/QZNWR2315870.
Siblings (feat. Foure, Jarry Manna & Angie Rose)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8de9cedec4835477998354b74a2f619a52858c425765882e35e2115cce38027. 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/TCACW1748760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9a4ba89b17a74c10c635add5182434ef9f96f894c5a151df81e7020199c52b. 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/QMTND2200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e79abda6c6bdcf6f9a1c2c9071563a9786dde0bee2407e747ed3f5ab9aacfa. 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/QZNWX2367620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b327212f790f36173f9b0b4697ddef11033e95511fc30b920e2d1327fe687e. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCADP1897819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bf3c59eb44ac02010381063127d8ffc29b878206c60c5c676c6174e2ab54c7. 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/NGA351700066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd6c3629a88a927d0f2e3683aa0c6f8156b42b11b45a27cbc3f4aaae2e00b77. 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/QM4TX2270619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe487e372f10cfae062d3c92ae335c9360435f5e964107606e38f8722154ff82a. 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/ZABE32100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bac8db91cdb36259dabd966549b9f3e763214a9e021c91bcccd01d35ef54f3e. 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/USUM72120257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230e974869afc4e03be6b173489af7ba9dc653db611a05d11f8f96d1b4b63d33. 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/QMTND2000168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d28600ca9fef8968f5557ee91d8dc2ae91b0ad0a6aaa32dce7c0b1ddae1b4ef. 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/US3DF2245857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49e998b2d20b99ad8c3ad158d72174a348a025afa7d1cc857707ee54ef7ceda. 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/USUM72112522.
Unstoppable (Do It Again) - Global Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb98bfdabc22ec3eb5a2df891e5325e41206f6ee59f635a42aa2d73870f7aca. 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/USUM72107910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ef123de71da0f0fd705427dcbc15238bbcbde60e2c2f28d42b3a2a4f55f61f. 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/USUM72105415.