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 0x34ad38b888289242ef3a02030c6d04f3f750c709da13266b70f851eeb81313dc. 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/00708ef4-73c9-48c8-a2f0-818cf0d59ab2.json and https://artists.proofprofile.net/proofs/artist/00708ef4-73c9-48c8-a2f0-818cf0d59ab2.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 0xf3bdf4c5631a5484f0c2f4f3892b5c5f7cab9db87f64a3bcfb1475837e51cf8e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMFME1598576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79446967fcd367bb1ed70933a0595e2bf303618f3496c66f896955b776733074. 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/QMFME1598580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f73a0f20d6480a07e2c46fa2bd68d8596c578c25ffe8169c518b5f1c141dd4. 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/QM4TW1746015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec40f4c52f88164f991b24bc49c39b6daf260b759269b2a2375001c64b058e84. 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/FRX762210489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3745775535dad26bd7938e6de64782251e189f43d8c184b0cbbfe6ee8b3aaa4. 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/FRX762210490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527b1562ba6512c392c227e44a0dd95efd3aa340c621da42c3a59dca54e1ae7d. 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/DGA062385719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6dbf9b3456f4d138b9fc2a547d91da425d968176f9a2b9b9c8c9ca10b938400. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DGA0P2320690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c831e72842a422edccde91b0f99b01a3e7930377af17548001282c12e0ea29. 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/FRX762549090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338a33c226483ca26e51aaf3de4ca103c580bd901ae5b05e5648e5ff249dfd2a. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FRX762549091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329f5f1d85a28a3321b6085241b361f60db00a1f64aa19158d6c289102f62a28. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX762549095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7abe6926b1ce18f61c0fe998d09c4f236324babd5b17a3d5d0f81235b85043c. 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/FRX762549096.