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 0x217d6324f187e21b611b61e0e1c135649c0d4b66ae64d80fa5cb0dd547c87446. 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/2be28a71-ad4c-4753-84ff-a9820ecafd4a.json and https://artists.proofprofile.net/proofs/artist/2be28a71-ad4c-4753-84ff-a9820ecafd4a.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 0x31580e8f1dab49c2372ef37465d10148daeeb983bbbd986b759e125821b8ab6a. 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/USX9P2386340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100e1d1ba43e0a48f666ae8d8efaeb455b709e5445287ec52693258302a18fc8. 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/TRALZ1300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c15e2052d75ffc7a774a1b5cd162cd2c0b3191dc4b5cebcae88de58aab8322e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZTVM2136358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874d1eb5b27f0ad5147ab30a4f5a5f254a050494b88869fe2b81b29d03425c7b. 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/QZTVM2136359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f61fa1b8af5807dc737be5f988f1d4622ec705ac7d588edfa8438a779c688eb. 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/QZTVM2136360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dac849dbe4f426042c762c88b7b750302ff2deb35a17a975830e31ef16009a. 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/QZTVM2136361.
SAZ 4 - 1 "Iğdır'ın Al Alması + Başındaki Yazmayı da Sarıya mı Boyadın + Ay Vuruyi"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1363b68d6744ff908ee6d5a86061f10ba548f705f8d25c8c87bbc3a203a75e61. 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/QZTVM2136362.
SAZ 4 - 2 "Yazımı Kışa Çevirdin & Arakçı'nın Mendedir Ceyran"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d416788375ba788d46fda54012151b2cca9571f9001121c05c2a10b623ba2a. 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/QZTVM2136363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ebdc385748da3df1ee60131d6164017535443d0d51f680881f7d3ba7f538a2. 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/QZTVM2136364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc816288645b86be946b145c18c7eb2bc82889e39f8062bc9f045fd6170b01601. 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/QMFMF1905822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fdf233620e5ff8fd47f23ac4393bdc3ee0ffaba3b7ab61f798997c10c7f513. 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/TR0281906156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9095a69ade6949577056e07250f422c32f6ece62766e4d094e3a99e7ee73a6e. 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/TR0281906157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0974d444729fbba224e7baa34e0816cb9c7344482f1927b552fea04e2c0652ab. 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/TR0281906158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167855202c1477d3c34928e630f55eabd9c4b271e241e499d7b8cd4993d0f3da. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TR0281906155.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e96957144964b170d48cb818c5f7aacaff501ced757cdf4d49c87130c8a74f. 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/TRADO1600083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fd7a1d271730b286c05566b8858ef0f487d0ac3bc59d4893453228386ffd52. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TRADO1600082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e4c2dff18ef478e2c3cdbfb2f7d7c100b299bd975379c0d38519160674e2bb. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/TRADO1600085.