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 0x83fb1b4e0319a9bfd86a2222ff262696e0aac9d16de4ae1b7c840b5542dfb842. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/782d78f2-fc61-4778-84bc-0101cfe3b08e.json and https://artists.proofprofile.net/proofs/artist/782d78f2-fc61-4778-84bc-0101cfe3b08e.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 0x52d90264cb05506da003ed890cf55455bf7e3c334914927f580e0c249cf7bfc5. 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/DGA052079320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9098d503be3ca391b5cd600d00df0daf3aa8c3a889c6b2eec286ad09fe0e7b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA052079309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86b207e98a592d61a46daf3e3d93ec5570b34059d8fd2ac447952e4375df675. 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/DGA052079313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d85615081108d2307ae15550df624d4cc0f6e6888eb1ac8da845a6902ffcaa. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DGA052079314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6609417ac052738d06716a8dd321a9f66bbf0faade2a0d422cdbd4652ca34a. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:54:43Z), 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/DGA052079317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e84dd24e61e770bc9a684e3f29c43964255063875c0682df259e9a77ed0fad. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRX762072490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927674b501861163cc9dedf40183e983648051aa5e6b08009199d9832c4dbe66. 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/FRX762072491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d878d4186cf60104f9dc12f5252763bf2115690c77395962260884f68d8c49f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX762072492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96cb3ca5363d14487f529b8bc3c8ae991a74fbefea5b19226e59d1b026e7672. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX762072494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a3830f34b78c7463da6c6916308100c6efe2cdcc3fc10084f5011815c1c6b9. 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/FR2X42183760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee07bb550dd8f73585fa9eab5cbc14faee6db8a4471c12eebbf9931d2996191. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR2X42183764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825135bc136e4ee8e17bc8e83c14b10dc7ea994be8cb26a248fc6800e8474c8c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR2X42183767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b6d9bb4c49c40b6f335b8674484e498973f428b4f01c2e950b6c02de99b7f6. 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/FRX452439619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3f990b764da4660db278908cfa4780a9fa8cd86bf70439bdeeb1b086dfb0ee. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/DGA0L2468718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5981de9c8ea646d7c8abd93cb226a84d21413c74280842be68461c927246f7fe. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FRX282514375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88023cacb12b87442d8719176f0863ce72bb881e10e62b5dae9b2fffc6772d2. 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/DGA072225857.