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 0x3d77c55e4b4569a1c1b03a774ab690add9d5ce699272777dc93d4775da95efd6. 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/9c099a08-23cf-47b2-80c4-ec6aee1446da.json and https://artists.proofprofile.net/proofs/artist/9c099a08-23cf-47b2-80c4-ec6aee1446da.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 0x31d0d40962a431ab42ac4ccf080fcfd668bf4d3bd20426eb62a06f1c358e2ad5. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TRATK2000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbac82d68b9767c9f93ddff1e4b172e91233aa1ac7c6ab892256a325157cf0b6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TR0010500374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6228661a8f9ec7596c79be4488c8f854ef77575d229a6149eea8e88f5ce9d9. 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/TR0010500376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a62b9f3144e80a6980bea9fe65c6cef116b7fc4268de9871adc3bda3393343. 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/TR0010500377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8c83fd0aefbcb603b07adb7da1e4506115bb475e3b8211485b612c225243c6. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/TR0010500380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5eca437163a7427c61e8bcc44e2ddc53dc33840707310beea0a7831b93b9bd8. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/TR0010500921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad805ec2c4f6bf5c4afe7ff6d0f3cc7ffb122bdd3a42d84de6c639b209b329b. 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/TR0010501466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657665ee67e0689471b2647a0169a497184142d94b96016efa6018293c79cc4c. 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/TR0010501467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305297c6ec7d946b54bfafa23a1bc16d1949c0da8c65927879ec95019845f7ad. 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/TR0010501469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e45097b482c25e9cc42059aab484dfaf4c095ef4acad88ed00dfaba9049ddba. 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/TR0010501470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf544fa06eca8e6b76c16dc995a261de8b30750cfcb5fdd45f17311f1020350e2. 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/TR0010501475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8013cab0cbba6370b4e5752984093d7b046ca2aa952934de69686ed91605f0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TR0010600253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03091eb2a87ab22ac9a534a7bcfba4cb344ab6978cb7cb2c5dde9c8a4a7f979c. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TR0010600251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1966c14de13ddb71282f1d34d3155d31cc784f42f24fe62c121bacb057d85f87. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TRAET1300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240933605b3568f89ebdbf26ab3a937bc05113004dd419ee1cc395c109be2f8e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TRAET1300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8660cf2b73e5fee7b9bcfe4a041159b44bf094541ec8686089843cb7cfdf215b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TRAET1300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d19b4d66e2af08d811f8fd9677ad47dfe72d9389beda05fb8c66d0e5f68897d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TRAET1400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487f463247368549e039612baf8f83e1f7a76d693c64bc681a32de85fc324f0d. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/TR0391600149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8966ceb6d93cf0003f1da3b57ea0f2d523216cc70101c588974840f5eded525e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TRA161700389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43d8e92315e0b4fe912192056ce454f36d3b4b6fe25452e95b56aacc57797f5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TRA161700876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbb197f22d52f426e060f0b0ba9ce1a556117dd57d4c739ade9c648eacc95f4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TRA161700879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f78e5d53ca8f84d710d900d29dd63b52c585b2941275a375c603f0ea6671ac. 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/TRA162000212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508f5251896c5cc0a9c6f55a6c0f017eda79ceee25c9de50b715d9a00bef5df0. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/TRA162000214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a82ed70ca1e5a6a48b0c6f4b6c4afaf24a89aac56a4b89624396afad68f95ac. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/TRBZE2300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114ceeb07eda7fa21fc1c8961a4e8df4ac6e010ee9d3c196fdbdd9db003b0118. 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/TR0441210706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c8fdb25b33df00ee5d12d51e0288dcb862965047f5ea1c7c146de42dfea9c1. 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/TR0010501703.
Kurtuluş Son Durak (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c459c0fbe8dc2c835d9ed084fb305c19bb0ebe0dced3b3797051d73f0e7195a. 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/FR6V82088844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1577e4a7d04c80c7d2490dd17f6e1236a0881c2b1cc8e55678d2fb38e4acf56. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR6V81707895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68b863f46899639594e87750712e8d2df2a9f0a1b985300f227ab2fc25b44e6. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TR8110900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1112c706224a09ee9847d9ed49c295b64cf9348c9c2f7f8b044d766f527581b3. 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/TR2181213903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca75170ca6a8cae291ab789d98bcff5e0206643e4341a161b51721ef58875502. 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/TR2181213901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1112c706224a09ee9847d9ed49c295b64cf9348c9c2f7f8b044d766f527581b3. 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/TR2181213903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca75170ca6a8cae291ab789d98bcff5e0206643e4341a161b51721ef58875502. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TR2181213901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5aafc32f9ddc250b314709c0decd177d9e58b0fc1e2be7a0900218dbb0d8425. 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/TRAET1500143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8124b85c56f54c2e5617ce899b7b0e7e9e1e45dae7c6dfccb6ec5c689fa5be98. 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/TRAET1500147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c988bf7e47228edb890650eec190dc79cab474e2a56fba3060d7bf9101e714. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/TRAET1500153.