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 0x0566bc979d0b5aad8e1902c31a2b7584e6e1a6379fbaf2b4762316c84aeb59a9. 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/1eab707f-6378-442f-9b25-5f5aa4a715e6.json and https://artists.proofprofile.net/proofs/artist/1eab707f-6378-442f-9b25-5f5aa4a715e6.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 0x1825d0d4ca3725108a1cad878d4119ad1ddd127ed7cbe5284f544da34b81e56d. 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/QZFZ72382087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9843be0d3ad24031c426685b3bf69775c34496e93e0d2fc82c6be126238dadf4. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZRP42321223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edc1d955d4c1e3c5b3123a7308c0dc34d10821614eb42957ec979d38008d22d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/AUMEV2506077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f5d2885b5b70e7706dfa054205eab0f891a759a65d49367bb1fcc1b4281c1d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AUMEV2535848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b7984e01d4ffdb8ad3558047786e0cdac59048a55e12d2a2420ce8b021935a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/AUGBT2533784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fcdf12fc78334fe0bd105970d7367fe908ec55288e3097d34938aeb0f1f3a6. 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/UKW3Z2201760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9a3d53a7410b64f55254ad8f5ee1a84955f0b60ae6de7c3a9eb217328722af. 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/QZK6N2315900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247a2ea5c5b8a22b3b0d8be69f3b8d04d6ab3de43a7208159c462aace3429fbf. 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/QZDA72200614.