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 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 0x1d8dad9e0bceb716e89ff5e1d53b29f52c2414165dab27713507c0bcb1f3460b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fbf45e98-37c3-4454-8579-9f7fa9cbc261.json and https://artists.proofprofile.net/proofs/artist/fbf45e98-37c3-4454-8579-9f7fa9cbc261.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 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 0x136eabc242c7c915c5a7c6e70937fab8d090b8c0293dc259d22403c5be681e54. 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/TR0220903042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e63c4f37bcda56ec2a1d5872edc754d8260ea76b30b733a7d26641347e1efea. 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/TR0220903043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3450be0b31fd43379a563aeae7da3e9f13598be4c53075840df9dbf8490a42d. 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/TR0220903052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7870257f8fbbf7d3f11001133fe551006ded8f86a620ac29a602ae5d48af93e2. 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/TR0220903051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6951bc8874b2e1f24fae1bfe57f660b0f633bb23ef0ad520933cae344d5e5a6a. 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/TR0220903048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77e888179484b161d15855a28a5957030c3cae11fc1f8f60ab4f11f8d702a55. 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/TR0220903049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad70dced7e0f0b3ba5923ccbc76a1b89c2537cbaf5fe189b8117294b8f20ce7. 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/TR0220903045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ead4ca0abc41b523e3eccf1c696bb1b2e5d1525a4ed9d3f5566e0a8f84eb92e. 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/TR0220903047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234c21c5409bdbcf39afb02850477f1da1374f2e43fb36c5a13ff7c0e632c637. 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/TR0220903041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14178f37803b39a194c079746389a91ca6f969361fb03b817db3212a80e5ff3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TR0220602033.
Aydın Öztürk Bestelerini Söylediler, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5a306d9bbd1cc93b7e9470aad1595662c721675968eb6d2eb2868e0e3c58b9. 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/TR2100600222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753f39820d97052f9b441bdbfd5e1c4763c762eac1d82b590751bbf0a907ff18. 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/TR2100600224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27bcfd31e7bb6ad4819d6bdedd21e889e731f8eff2a3868a8d7c33f946c3907. 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/TR2100600230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68633558435c886bf3e0aeaaee81b9773f38ae87306755b3f658a9283a99775. 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/TR2100600231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4218164b6a2612441a060f259de512f490b10018f53774fd2b9122a2581559d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TR2100600232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830238bece69b6991699f88e62e74abce0a36198302ab6636e50d7aefb07e0a3. 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/TR2100600233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e239da1b502c59ae0911ef2ca94bb5271af122effc5b45eb66126e5e47d1d3. 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/TR2100600227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c84de1b2e7723134581867bbe3ac03f758353ed1d4fb9d3dabdbb9aa6b5c08. 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/FR2X41409002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4891cc6b9bcfa0d864f3090513c6c4ed9929a4ca2a412fa85523411b8940c9a5. 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/TR2100600234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e56c5039da3c3a54acfe3885937a14a8142658c9f87ebc50ad312ab566ce619. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TR1591201677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bf9505eef0565aad83ed7f49429a02194576560763261f79e7731ce98a6188. 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/TR1591201676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa387d87e473f1c71e8b2969c073adb39482752214fe5e1b49bc40898a74454b3. 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/TR0220500496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf080d1d39ad7871bb4d1a824d2091e7df438cc76f8fd2d03231d6c5de795a3a9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TR0220500498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96d74ebfde4b381c12da54cb75b5872b66cbcfde6979e97fc4da25fcf4fc3ae. 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/TR0220501083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c73383b31fd2a20a9df37c155219091b2748c18fb899add5ed86897de4c14ab. 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/TR2100600027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1017e44d7ff23a339349c9c50e494abf7f3816a973576eae8bdfe0c657187ed7. 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/TR2100600028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57a3595767270f122e10b618bfd14691e822274b6d873a35b6dc24d7635d89a. 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/TR2100600025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dad6509a018a817777371ada05a95ad38b046c5f15f095e55511ddfd659dfcb. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:57:10Z), 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/TR2100600032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ef7b6ed20e4b9ff259b4b76736cbf8a4eef184482ffb1e5394d28a2a0f824a. 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/TR2100600034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296464354b1a4a724f2a86680108fa4c53e14b9fb2effcab22876f90edfbf2bf. 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/TR2100600035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416d9bf53f2c1f1c6859742b437cfcd182b22d943f7898e2d0b9cc9b75fa62b6. 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/TR2100600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3155d35c94078e1dd050ab1337d37dc3b768eecc99076a4d0e21374b5100daa7. 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/DGA072385459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3386bf74f6cf85623faf865f85d357e34b3011807ddfdfb3d5b4b2bd8ab5bd0f. 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/TR2100600163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87752f163cf8987469e1f1e810d02301cef0eb0843658773b70bcd3fb114035e. 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/FR2X41408905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb046cb3a2598f0bb6d36d2fff7c8c3f5f7ab3461bf90f1ae3e52263c749c18f4. 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/TR4591303019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa387d87e473f1c71e8b2969c073adb39482752214fe5e1b49bc40898a74454b3. 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/TR0220500496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb171be6ed8c2416914293f1291a29b18b792fc77c8bc0b15ef1fa37ca021bb0. 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/TR0220500505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0996c9ffba0c5e6ceb382ec48a4dfe55a368dfd66e82c9c7d4b910eb30342bd6. 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/TR0220500495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96d74ebfde4b381c12da54cb75b5872b66cbcfde6979e97fc4da25fcf4fc3ae. 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/TR0220501083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01719b09fb15025164211425b340c293062af0031547546047e23835cb813ef8. 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/TR4591600073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3450be0b31fd43379a563aeae7da3e9f13598be4c53075840df9dbf8490a42d. 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/TR0220903052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77e888179484b161d15855a28a5957030c3cae11fc1f8f60ab4f11f8d702a55. 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/TR0220903049.