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 0x10b28d40244590630cc66fa99d85d238bbb14fe229b416ba75a71d52e500f393. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/251c217d-cdc4-4c63-b3d0-4002dc08c733.json and https://artists.proofprofile.net/proofs/artist/251c217d-cdc4-4c63-b3d0-4002dc08c733.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 0xc416e92e586ecec64a065303a8d7ed3083aff699c32236b992f19896922b3899. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SE46E1902301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e23596e7a29613f44834d64c8fb2d5c4779a46479962d05514c5f4a986e334. 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/SE46E1902101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f200cdd2336ced45f78ac86356fc9b8792ef75c6eda306c9aa1c9727a6c12b0. 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/SE46E1902305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a660be4c7b3aed8ae93582a7f4f39b06c4c0ba6f1e957f19094da6213b6105. 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/SE46E1901801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3c06832593255664d8ab194af07a10a9802838f771932b2de4920697a8120e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/SE46E1902307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf4ae4ce26c7af63bb4f7c8a5ffbb8617a491d56ac1093691d5b8e477765d24. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/SE46E1902303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd436d5cca9b2f0a474b56ef694f8671944a657186bd60640d6fa57dd4fc7f730. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SE46E2300206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68c1dd7aed856c1c78c0311bf3fb3a071c5251fd1fdc9844dcc6242c3297b5c. 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/SE46E2200608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e87a28359033803e9ad520f53dd195bb32b1910947a972de432e79944e8f6a. 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/SE46E2200607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e87a28359033803e9ad520f53dd195bb32b1910947a972de432e79944e8f6a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE46E2200607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64c2972e2ae2156cf2b1f1fe75e46f3f8961210609e970b4e2cb27f2cbd43a7. 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/SE46E2000701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f4c65c670d0a227bcc64bfdf13023c56fa4b3a5e4bd990e19c3cfe7dab9573. 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/SE46E2000702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f73ec08f40b7435d55d479465c418b89ffccab919d01e4c72db07fb1d40fcd. 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/SE46E2000703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe69a0620f2b35f02f078fcb2abfa013d86ec2a7b343e92e12797809383be857. 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/SE46E2000704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb745147a1ff4643fcd044e2a35403053a854bc1d26ea2b755dbc1b398212ddc7. 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/SE46E2000705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f4c65c670d0a227bcc64bfdf13023c56fa4b3a5e4bd990e19c3cfe7dab9573. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SE46E2000702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a660be4c7b3aed8ae93582a7f4f39b06c4c0ba6f1e957f19094da6213b6105. 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/SE46E1901801.