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 0x48180066c620292ddcc472e393088048965f5ea50aa9e6812bb2ca49ab8e87f3. 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/910389ce-ae4d-4234-9870-4acea5bca8d2.json and https://artists.proofprofile.net/proofs/artist/910389ce-ae4d-4234-9870-4acea5bca8d2.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 0xcb4dae89389e6a164145f0ec5c777191e3ba937888178f55a6fe678cad9223ea. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/CAUM81700148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526e27df0b12852457391a6370373a33a86a8a0e4dfa468b8eaaf4d403ee549d. 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/CAUM81800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a68615bf488f72236d5a70bd2a18626d8777f14cedbb5de681d08d0d3e6bea. 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/CAUM81900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a644efbf6c47b4740852960f6c2a5d86b704f4fe66a4a72fc055613fd75926. 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/CAUM81900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca649ebd83ebcb60bf5b6e1a09219bad2431e0016a8eb4d6cc63ef23cde89b7. 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/CAUM81900146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203412c8f3090b37f154bbe0c91326389525b6fe584a7c0d6642f05027f39851. 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/CAUM81900147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5535cb69a1dc79e74303636bf41908583bb384332564b1e4f1e9d344c97b3c18. 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/CAUM82000319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342caaedb098f527ac2a95985e0f11845781c3d235e673645775543ee7cc88d0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CAUM82200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89de717f1654a11547e1150c598803c461953fbcdc2e9b11128c25a45d9a1683. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CAUM82200144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ce758e23ab6a9ed578b4953f8ccd129086d766cb52a84e8b27a2e24c63cf1c. 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/CAUM82200639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b332f3935d32ced4c005b95ab8e18800caf9ab0d9945f93551e8e2e61c0c52e. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/CA6D22200692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86209dc9105241acf5cae8de44f7d2aa48be0f894c340530945669c3667579bb. 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/US38Y2413404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26aaab79efb180cc643e63d57faf2bbd9bf348b1457a2a49b516792847330d8. 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/GB2LD2410435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbccb0785af37ba3f4813ae5a2d3ba0ec409f30551414413782620114393187. 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/GB2LD2310167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbccb0785af37ba3f4813ae5a2d3ba0ec409f30551414413782620114393187. 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/GB2LD2310167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd440e31ac0fe6f6dee91c503426faa2a557ca4b6f9b3d6a1a83de41204d65a. 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/CAUM81700077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3aa9e9460849bc7e31d7c368833a9b77d39cbe0ff28225ea478de9ab94ace1e. 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/CAUM81900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adc27e3371371bca6fac2abc9a51c5b5350be2078b606272224868802d613f7. 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/CAUM82000176.
Every Color (with Foster The People) - DNMO Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a92ca34891b4cf5908128bb5667b30644ee5d695399d59531a1beca186d3df. 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/USUM72007732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c983bc2fba2992b6b49ab21924658a000a74b055f927e46fcdee96eb5b6ff96. 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/CAW112200147.
In My Hands (with Camden Cox) - DNMO Remix
In My Hands (with Camden Cox) [DNMO Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4027bc187ca3638ae0b8359be6aba8e74652c6631c6e92f072815429a78714a8. 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/NL8RL2337309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90a991d0b5eb335cc13e87450e5126e48c3c8e28c4a304e4ae392c1c8652ff2. 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/USA2P2241770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6c9bbf6e2d8b049a7ce86a6d351bf696e792d338c051e1d71e298b97341a01. 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/UST8K1677870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6c9bbf6e2d8b049a7ce86a6d351bf696e792d338c051e1d71e298b97341a01. 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/UST8K1677870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad5081e71a55ec518fbce96b94cbc1b2d58403ac755bb03c0b0f6f95e9d23e7. 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/TCACX1742427.