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 0x136eda672128d0b7e06f0a1a05e7d899410b5b8cca66ed6ea0070bd20fbdf6f7. 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/d23825d5-3bcb-410e-9cc9-aff3d6d4e547.json and https://artists.proofprofile.net/proofs/artist/d23825d5-3bcb-410e-9cc9-aff3d6d4e547.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 0xba4fcdc706eb09149b02a269119e322b5bce2eb222edbcc6d1a505a266a2f988. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/UYM122003446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a155e1cd3112a29ce6ef8110851be6c8c59d18e6c0481c82019e4ded6f8d1f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UYM121702253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167b47281c5c0b2495bc8b8a944e858d9638b117a640d06f0348e674fcd0e6af. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/UYM121702266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3307c635904e31c1dca6373ddbadc3f8609fc2db9ca62765fee136b374f5e7ed. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/UYM121903149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384f61c5c5696f291c0e1c94cac1ee3a7a007aee2a2d5f815189f6a40da732fa. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UYM122201362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8b3f057a3bef9e98de5914bc89613d450cfc6bee5f2b8127cbcb1d43f2fe41. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/UYM122401418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220eba15350a5ba3d0610c49459a879abb01de87046313bb47dcadf34592ce30. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UYM122401420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18587c4eafb9a025e1ebe9e8a1d7be15a1dffae530079953899a11d17684771. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/UYM122500702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d54cbb1d2a1fa7ac87a13b4cbe26f9686dcf771e4f0e735601fc918f517c45. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UYM122500704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039b75cab953beb8ed4dc20e1a455931e8bbdff225906fd8694980d9960b0d92. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UYM122500751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a74acfab1bfd5cbd52cd749803c9b488fb9b28610ce64d44cd56e13bc8b295. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:41:00Z), 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/UYM122500756.