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 0x2ae8e67285ba1cdf739a6dd9547a37ab9531a877c193de6c50c63ae98a457541. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5966091-1034-45b2-89f3-1e1dfb70b95b.json and https://artists.proofprofile.net/proofs/artist/a5966091-1034-45b2-89f3-1e1dfb70b95b.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 0xe767874745f72b99b91d2bbc869c8e96a5a4b2f09c6281f8bf3f44ce811cf3fe. 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/QMFMG1520411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40d5b381e5e5245c431cb15569598435b17e6e98501049b20ac2deeb6762a5d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMFMG1520414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4003d191d3fa38fb1c31099195b4b84ead536392e8eccea4c8769b01d7c56004. 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/QMFMG1520415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52b84bc300fddeb283df8278c914d20718d97caab0053c767342683ba6d10e4. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QMFMG1520418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e47c2f06c0eb42ccd16f51d6d99e6212d624a0a6ae0759eb3817a095c038dbb. 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/QMFMG1520423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56bc2a407bb73a3427fc8843f7f4f3d7af1f541f5c7bf3ae3049fbc13b4c0a7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMFMG1520425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47dcd063547b5c71d111a786b9a9cb216aabc0dbb3a58b55b97b597e6b80bb20. 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/QZHZ32090446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e4d3dd1297e42a5110972071c91f6bd013da89d0afa80a56069eff0de8b70c. 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/QZGLS1985154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b314e120dd0861975f82f7238fe9106903b6ba6c00f7440f83d710134747806. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USL4Q1876285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7550db6afe0507c36dc8d73130f7529346d51e13ca1ce3e8517c6d027da268. 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/USL4Q1876286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1941b1cf9dd8f17c656cb57c4fae0c813018818be89841a8bd79a5991c04a9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USL4Q1876287.