1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0xda05c1c28d7f55da2253231883c86ba6bcbb099e2f923fa82e166bb776ceba7e. 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/206d86e4-226d-4222-8299-954c302f2cd9.json and https://artists.proofprofile.net/proofs/artist/206d86e4-226d-4222-8299-954c302f2cd9.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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x805c5619856263e5721629cb3a8b439bfca74039af603b30bf07258cf22740bf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBCLQ2201183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c9cd45a5d4f2a19d476e8f98a29917ab93f11fe556d0ac3e25777d4a51c5a1. 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/GBCLQ2201184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbc2078d00c8cdcebac8e5b0619819c95af7834caf8d0b602a7e63de252f811. 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/GBCLQ2201205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55b0b9502330c8012e3d1dc7381067fd99fe18f8bc0ceb39e5d67bcd0913392. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBCLQ2201185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86dc0b1356c5b1e229b0ec49ed2e24a3c6db9fd5dd2196a857983d8d3c6f338e. 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/GBCLQ2201186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079d97806cd1ebba61d4f3c1b7afb3d0dcd18e37a8252ce01149a9273bfb0df8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBCLQ2201187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd901934c02f07c1b98198e51ba68875cc08505e05b5d9d5b6e7819234b7282d3. 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/GBCLQ2201188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196c8aa518505551072f0f5e61cceff654f53e062a45be50cd7539920f74d44d. 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/GBCLQ2201189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc351fd7683a01464e156f1d8a1e901e5858f915117fb02fecc5476e15974c3. 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/GBCLQ2201190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd0d9198fc138c83d0a64cc1a4f66fd738c038dd8c898c6bca37891c5dcc113. 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/GBCLQ2201191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86dc0b1356c5b1e229b0ec49ed2e24a3c6db9fd5dd2196a857983d8d3c6f338e. 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/GBCLQ2201186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805c5619856263e5721629cb3a8b439bfca74039af603b30bf07258cf22740bf. 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/GBCLQ2201183.