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 0xb55ced82e0be7ae1d2dec26a1676e07ce39bf773fcce9d209dfc9e44193af221. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/710d7e6a-4eed-4001-870e-77684ab2d14b.json and https://artists.proofprofile.net/proofs/artist/710d7e6a-4eed-4001-870e-77684ab2d14b.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 0x0260687037865d6e004943e6c1963f160a6d11a8bc657dd82268818ce5a7af0b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/CACWV2100876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65f7624ecdd428e14941701a780fbf630e4134fcc71dd4650e1f975db7daf86. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CACWV2100872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3e38ce5fcefacf3f26e105852c5266d4ab8ad2fb6a3116eff05434e8a51521. 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/CACWV2100870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9e8f1779bacd5af0bb159165b188a0c9598f10f808046702e372d24f329b40. 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/CACWV2100871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1e3c7bb6f1a327e9ae9cfd10f093362d21c69e2116fb7479594db98fef45bc. 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/CACWV1945517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e8a7765c90920c4f9324b4c36c9d4f9adb674911a3a1c5d2f6231f838f8fa5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CACWV1864499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252a30b530751b01ee375128a6a7f2aaa928bdee17e38675b4a694a4f537bde5. 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/CACWV1864502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d3fb1222b36b954d2e9bdd3cc2e76c572be5bdf9f170024dfdaf52146f859e. 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/CACWV1864503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2938dcde2138c87ce4afd1c0bf58a90279c7b8cbec502c487a8516d6a85d476. 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/CACWV1864505.