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 0x2bdff6a1d3676d1df88e891de0f235cf0437e9f4b7a0f9e2d74969501eee91c8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4d34437-b6f4-4d00-a4ba-19944e5503b8.json and https://artists.proofprofile.net/proofs/artist/c4d34437-b6f4-4d00-a4ba-19944e5503b8.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 0xdfeebaa770f5cb735f416ef73d4539732d849efea2090d85841492c87546cb64. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/QZTB72207833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3ec18b1fe06f5397a3566882923c5b06ded020a5babcb1f049ce4c7083cca6. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:07:39Z), 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/QZNWR2307581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb658855388c2275e1fff27aa206f0d707da48f143bc40420b5d923454b1df25. 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/QZTAT2335833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60566dba2ba61ac02bc329b3894954f86bd050b88d05d850af46d280c2cfff6. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZTB82353218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa446356f9bbf5e1d8e9da9a9b3e50c0f2410541201c6cccdfe8f59acfc54fa45. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/QZDA82434459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49f5e1570fa3300b4dc0a87b7f252eb8a923beef1a6d882869248e2ffde9c21. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/QZDA82434464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357404186ecf3e7322e4353ae4030304f0c5366ec68dec9f693df46c68c324db. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZDA82434465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18477eca522f446fd8a7619295328d2ec8651ed74cf95e7c5094675fa562e6dd. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZMEP2469155.
Hard Art 2: Act I - A Kiss Before Goodbye
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd7f1032cb454f77fb21c10b85ef2741f6fedbabcb8578bc4bdaacf444c1058. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6J2512520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb23fc2587bf087c5be94f0da43f8de47398ee3311833f2fb1617ee58597a37e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:21:56Z), 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/QZWFE2562992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64cdd7cffdaad9c09f37e45b6cf83e4d29d406fa64b0ad8dd9be51bddb161fd. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:59:50Z), 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/QZWFE2562994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28405b2a571cd178c9f717c84bcea7ef9cac8c221d1f5702e0956d5893f75b67. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFE2562995.