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 0x3b449369fb75c54577d3eacf43c9ca5dd84f5b0b6c242bb4f92a0f30194a0131. Chain 2 (Bitcoin): anchored in block 953895 (2026-06-16T05:46:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ec1c478-cd1c-44df-95ca-958ec7e84164.json and https://artists.proofprofile.net/proofs/artist/0ec1c478-cd1c-44df-95ca-958ec7e84164.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 0x99a23728dcae6ad79f745eb0cc2d5fd1c7150354142ed63fe6bb2c5770c97e53. 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/SE6XY2332230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8121d487d927ce24b7becfe12b670ac04c721f36b92f6612cf3189e4105cb8c3. 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/SE6XY2311799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f36a6c419397b3b6132c1541d904a36ad5ea296c0881c1e1847a2ac8fcd27fb. 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/SE6XW2364969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4f2a9b21b0d38fb6ac822cb81b6f45b73d5cd4aa1ab32b7378adf0c6396eb2. 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/SE6XW2271177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ddd92e77f6a704a91d86949a2b168ec72599571ca505def0077a6a7ebe81b6. 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/SE6SA2313689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2451f68f28ca8da47d2e4ec57deaf13148680484e50c3258236fa2dc4b2cfb1d. 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/QZK6N2414938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62631ac6aaa082455a998308456f07b6809b800254bcf11ae1ffafe98170a61e. 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/QZK6H2451076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b02594619f6af3226a61b3169c272125a769a0111ab6349ca713e949289ca1. 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/QZDA72465462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74847c87d6f795123ae3dd3de39b50e85a4da88abe20144509f593042af1b92f. 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/QZNWT2373488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d98286dca99527851bfe10b552b93286bf95379b020acb6e4e622074262933. 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/QZMEQ2362770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3a0512758ec830cb02bce31fe9260490e891ad19acfaf59525cb9847e9f4da. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZMEN2396673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672dd649ee9d28ec456c8dec27ef460be33ab7b5f0f844cdd400a44941aa128f. 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/QZHN62326778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aadeedd083b4d6ae3f4c612b3e0e34ca07d43c02c4d648b81e2ca9f573f9fd6. 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/QZDA52570209.