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 0xee448007af533df1042681d527f59a1eb39dc0448e7ff683c88e19659c351f51. 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/ec46d80b-7ef8-4c5d-b11f-650cf1dfaf4b.json and https://artists.proofprofile.net/proofs/artist/ec46d80b-7ef8-4c5d-b11f-650cf1dfaf4b.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 0x68971923918a243f1fc01c9d80bb1fdb7868d05464cfd18c58feae2453302339. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZK6P2303310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb2892387403c86ca96d0101ed6e02d67c82f1ba7ed42f6f8e2dc84ce2a95b0. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QZNWR2358070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b0e462ebfe6b8cca61d8bdd8de8bd6b9a889f2c9fb8efc9b07bb51f4dad935. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWR2358071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3787dda61b6269a37a82efe1c35bcb1c9c7e65a62d83567423b706dd6bb5198. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZNWR2358072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4081f4aff90a6d0a0f66a64d02e3efd453cad52373627af7f2f0f0b087f8dedb. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZNWR2358075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d80c731ecaff7ae8592184a89fee64ab125cab7d02c21b09f6b43abed69a50c. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZNWR2358080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a039d21c469d5377cbeac4fd1137796c5502b4e4f19c6b0b3eccab06560a4e. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZNWR2358081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570cbd8541e56b5f84019e216a7b8c5f6c7d99805a2c34de115efec2c0daa18e. 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/QZMEN2388772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05de185f49fff9cdc3d697f1ed41f310eb6514895dcb83c8e693d877c202490d. 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/QZMEN2388774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fca7f5730efbeba38fbe29e53e6028e9475c131ca3add462bec97d691fcdd3. 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/QZMEN2388777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5c80781f37fb64e0b0f5cb61aaaaabc9ba7a3b5cea346644a0d8e27d743e38. 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/QZTB62209549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44aa343ebf0f8ef068e10dbe79cd708cfb0d409815fd5b8cf62e3ecbecdb1c42. 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/QZDA82386794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659e93690bd65a7c414285318af3c5c36cc5d9b6346f9ceff20d495d61ceb4ec. 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/USA2P2449138.
Jodeci (Remix) [feat. Vontee the Singer & Cash Cobain]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a3d3618bdb0fbae7023e661dbcc0b94cb0e32c89afbb57c89a8d003c1713c9. 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/USUM72413962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1931e0966d6cbc7c085206ef3a2f23d268ba0363d2f7325fb4241276405b5b5. 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/QZAKB2435512.