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 0x810556e25dc311daa6af98be6e69298125b4f75a45a26dc69b3bc87c96fbc7a7. 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/dbbedf7f-7117-49db-94e4-ca32dde15717.json and https://artists.proofprofile.net/proofs/artist/dbbedf7f-7117-49db-94e4-ca32dde15717.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 0x2293cb7dc6676de19e9a43ce369663a69e291f630b1fab5cbf602b83a8063771. 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/TCJPI1819519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2293cb7dc6676de19e9a43ce369663a69e291f630b1fab5cbf602b83a8063771. 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/TCJPI1819519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9e28087c9cd9743174e238b1105b9687917ebee7d6b408f16cb4180e806930. 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/TCJPR2244970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfbfe15cb39a208e83df7f13c4829c0b1305694f0858660a916d49822b044d3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCJPT2204572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd4e6a2c8a3e9cd4c4c8a1e3b219d89daf5b26ffadd2745a29db92e322adc19. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCJPT2204595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbefb6f2478bedbb28cf0ff3cfd0bf25d5d1fbcbbc65a55e3b687295407faad. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCJPV2337096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9afb1df1676345763c68019f3017c91f677fc20dd0fdcd3e955486f6c67d164. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/US3DF2408156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403ce226824d78979bb09e15f177df959316f133c8cae2ce9820027e7ba52e2e. 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/US3DF2454154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8f7351d65933d8fe309de68ba839c18b543e2b5e5779e0505d45e70bf908be. 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/US3DF2466727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9e689d1d98f70ec3ede95096b144caedf0abbde22fcad73ddbcd6ef6f25e75. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:37:37Z), 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/CH7812413558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5302bb3e4e2a6eb73868b96bcd5e0fff5697adbbad69dd8c9daa93df676e52ae. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/TCJPA2430793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed6257c7468c311e17511f0c0d2748a71bf1121a58f3d727b90b6f1f89426a1. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/TCJPE2581325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591a62a9780cc2b8e947567bd4db9d6b9658365e5688a8423ec478030ea34bea. 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/TCJPG2538368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591a62a9780cc2b8e947567bd4db9d6b9658365e5688a8423ec478030ea34bea. 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/TCJPG2538368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd044ced941e5032186e75907ffd26b318a7b1e1956a94e78b2f1504b8fb71c. 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/TCJPG2581408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357fc2e65c6eadfc1421b4f6893653f1a129d4a4691d5ef165e824ee98f476da. 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/FRIDO2598886.