1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c418cbb4bec7b54eac86a05fd7844395c6429bb82a9d90d2e517bf5c8a7a04. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d8a8b4e2-26b6-4fc2-b631-be7139becb05.json and https://artists.proofprofile.net/proofs/artist/d8a8b4e2-26b6-4fc2-b631-be7139becb05.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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f412d869c4a94c4dc43dbf53670695e19474f429c1d43beb6ab28a8c8b9cf2f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAEE1909252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ad2205ecbb5637b6c8b56894013df191ea1dc177d46c18f03cd33ca91c5e23. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAEU2007495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49678d0f404ecf9bcd73d64128289fe370ee1f686e5a0f5aa28726daa2c18be0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAEU2007497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ccc4e753f9a7a6e579cb7673f8f79df3f2a4fa7601013b31937d85ce4caddd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAEU2007514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696e05332c084d826a868e260a9bac9b334055b130e471abe276aeb9cfc7c9a9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAEU2007531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c41fab6fb8b63cdf46a44a27f07becbdb3c062ae4e9ad47eab19f8f9a2b8c2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCAFJ2148520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77abbadb1770b32056e7f0461354fb4f5c14b15477b55c4262edf99bf19a56ef. 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/TCAFJ2148552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cca7ce9a8620e2f37c99787bbdf8eb5e9ab32053ebc014937554e499cb7c6e3. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/TCAFJ2148522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1136995088fe40ad522f880ec358e73ac0a7078839ea684fa4b546a4f9da5d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCAFJ2148526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0026121d1a43634d1bc5aad3770037d8ff971dcd57dc0acb61fe90aad74f49f6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCAFJ2148528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ad769662e027435e0d3a92b7bab7f1d03a2ea2d6ff79322ba6434b26c31804. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAFJ2148604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe123944668a9dc02dd2aecbf8cc006a038e8b1ce2b5659022d8596c50119f5ab. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/TCAFJ2148583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541f935a94227438e2cece93e1410cb10a7b4bbd6df6ab5376ac0d733976f521. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAFJ2148540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72925920dd2477bf466ad0ac2c082c3c9c37e54b8441bcd3432ba35c09e9a383. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAFJ2148554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbb0744c80fae99bac4a9d3b07613f26f9386679c764d82c753814f80a5d241. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAFJ2148560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1977b634eaa3c1611149efd2dea6488e897a14d0101bf3aa60e2094c621ad355. 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/TCAFJ2148564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617a550c814f33ab81b553a2c949df672c4f848c66025cdbc6574bac705dbe1f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAFJ2148565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003fd580eb28e17ce228246227917bbbcbd662136f7749fbec99108ebc21d184. 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/TCAFJ2148578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf598515ff25a11e07ef14eae44432218d993d7321d2f409144a10a201a3f3915. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAFJ2148579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb26bdf9139e94a9f5f28ccc6098d7311f08668d2d2ca99e7a963a66869c6d9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAFJ2148582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a397f8b310a9d4901e1f50d785fc3ca927611819dbbe0635bd49d0b9d295e2. 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/TCAFJ2148585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7289f0c3e25c2cc56c8f936c6b7cbb8595cd23b00243a1902a0d17fef5bdae35. 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/TCAFJ2148587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba718a13a0743020fa2b5d343b299a17b52383ea79f2c5462794728419ce890d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAFJ2148599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a2edf3c983c6bebab4d535199c1b9562fa79c86b6bcdb92a0d5139e48f7c18. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAFJ2148601.