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 0x1ccda4dcb7d6c317f40b077752136cf1a952d8cf616559c7c78f4359db677bbb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d62cd5a-8ba5-4678-bf2f-4db9f713009e.json and https://artists.proofprofile.net/proofs/artist/7d62cd5a-8ba5-4678-bf2f-4db9f713009e.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 0x55b704ad0e2bf4b52f730fc3eb98c474531d8e2b55bba2f244419f79c1e8cd3a. 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/BK4DA2409884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9933d6143466e238612212992624ca0be244f970f163bec0a850492d69ff10fd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BK4DA2319202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de80e557763f411734234c6e591a30ad3e1a157f13b4860ef590a520a1be2b3. 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/BK4DA2312181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888a8bd800e8071ddbecd92b7becb2bf8e52263be4459c1a73db928597458cc4. 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/BK4DA2409885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59870af973f448feedc2ddc1a26445f1c71d738083b56ea6072147a758a09b09. 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/BK4DA2409886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0e6fd9cbb0767b03e413f3241ca0fb6d8635bb029376d0d6eb78510c8dae7a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BK4DA2409887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4696030042b4f798b91a1402199a7ac110da306da96b23196fea1e77866ae9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BK4DA2323978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d367a76c61e71a94c4a46e8b552d40707095864d685b1f7ceb365dc26bc2eee. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ESA012285677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9728bb8b5078532d5504cbe30f17584ae62869c648ed3aeae4a4f2a5e990542e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ESA092228604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f66efadf90efbd7a87bee976017d4969df350e1f6a34042364f278dc9253c5. 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/BK4DA2409888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3182b8ff8e9da7692e76b5966290f6717c0f444c6822af5ddce1733a889f6a15. 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/BK4DA2409889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b480aa14350eb4b09939541f0329e50a19dfd86c16b8217398515112116b1c. 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/BK4DA2409890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dea513f18e6b6d69dadb4b1026a4e8a3bf528681a2deab7538cec8df6623275. 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/BK4DA2409891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbd0d5f552b7e60d88add4893c7d39864a0eb4034a761d6abf2ef34e95e554f. 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/BK4DA2409892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4696030042b4f798b91a1402199a7ac110da306da96b23196fea1e77866ae9. 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/BK4DA2323978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9933d6143466e238612212992624ca0be244f970f163bec0a850492d69ff10fd. 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/BK4DA2319202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de80e557763f411734234c6e591a30ad3e1a157f13b4860ef590a520a1be2b3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BK4DA2312181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9728bb8b5078532d5504cbe30f17584ae62869c648ed3aeae4a4f2a5e990542e. 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/ESA092228604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d367a76c61e71a94c4a46e8b552d40707095864d685b1f7ceb365dc26bc2eee. 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/ESA012285677.