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 0x86ef38073db27a01d2b1dff2208bf7599d1f4614ae3ce42bc6964f6a05c8c14b. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6604551-9879-47df-9df4-c6a9079ee281.json and https://artists.proofprofile.net/proofs/artist/f6604551-9879-47df-9df4-c6a9079ee281.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 0x2336e8aa30a49e780c703741d9da2ed40035f4b253512bc357b45f30fe76710d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWFR2414236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21db3296022e468ab33195bb864bf5da6a7c84e7d7ac5be82d89814df41fb5b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZWFR2419622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491bbe49c6187a0cbd4a956b00791762976ec8ad3936add433fe369908fdafa1. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZWFR2472124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025c9736c7f7c9f31e8e8be4d19ff62325ce12dfd47ebe98f88b4e1f07c6e175. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZWFS2445079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5606c3235088ea8690594d398d6f9e363a344b93c1d19099072879ddb4da28f7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZZ7P2456413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6119d55a2e86e40efa5fcfb3a205171650d6888c4867b6f228a9920732c93e7. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZDA82506015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e8a77ca80e82f99f7b678a334ad2dda4aba435b0ee792e58c8af6ce3a45e5d. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:37:30Z), 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/QZDA82505913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7eb26161ea49774bbc5d2c0771c3344171f4722772414d22a88a24b7de9bbd4. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZDA82504942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a664f5faf68293f970d2bd0bca7b15fba2571520397585852660a04e9562461. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZHN72521676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993cc24b4ba9427a7aeb92dbf9d160a7bbea6fde61a0c47d67076d9e660b7f03. 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/QZHN82597146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3faf858ca99e01c8c4312a2bdc9c1bd216ec93ede27a3543424ebfde333f92bc. 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/QZPLS2546000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f47d25576147bc36aeb07710af604aec75522e76883f09c59f62cfe8b2172b4. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZWFM2506850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72f9fcac6ea1b69a91fc1096d92860edaf79c878baf8e2d973181e86d1dca0f. 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/QZWFM2506837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271ac8c7c8fb945fa8bb583db10862aad07391dfd036387c708cec62bc86d723. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZZ7T2553402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4cec312e63e684fb6a33a3662f911199d2185f72bb0f22066f5372c488af28e. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZZ7T2541617.