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 0xe837edcb91f5c792d69a709b10a42d7e753a60020d26d66b587c1dbb85e84c7a. 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/93089c86-4906-47e3-a5e2-41e66dc8c0b3.json and https://artists.proofprofile.net/proofs/artist/93089c86-4906-47e3-a5e2-41e66dc8c0b3.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 0xfdda7d975565b31da744f50488d47469637e3c84262d2748b23cfb7f07e87edc. 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/TR0191200698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1b819d5cef4752f7637119593e0e47ce3953b7a779425f40d12f665e1c259a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/FR2X41470723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f281111cd44c7989d648a927cc0d728045285ff835708eb1e489740cc748414. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/FR2X41470727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7d9b7f9617ff216f0b03a000b06d009cf021e3df7b8539970c4c86d50de9c0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TR1660600736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890b898e878eb66e55a435e299aaa3867ca98d89d83cf55415fced0802356cd8. 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/TR1660600740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50878605f809e4b15a9606888dc1894cd97223d690aa2e11c6f2aa3b5e08ef70. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TR1660600733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8635ab32ce65c70e85fb0a999e8e459c68301dd605f121698117fcf7c379aaef. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TR1660600742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0095b34deb42ae776e7595ebbb64c47b5f67118785a17c69fc5e4991fcd95975. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TR1660600737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e1176a8ad15972648e24d6cf4afaea5250b1f8060efc5c79cac9ffc1550107. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/TR1660600739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed8a0596c2c3219276d849c682bb5cb452c1aa46b2d0a2a7ae145bb2442fa4a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TR0410641636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4fe94b7e7eb50d422a7ab72b33e6a315ac0b3db276a8f20933497b42e62047. 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/TR0410641644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484eb8307d16f5bf44655471fd51bbdaee9c6b665c53c1230052dce1dd79c29e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TR0410641639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853ebcfe03bd0e1cc1ad75470a6258d5c27dc256cff6254efb531365ebae421b. 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/TR0410641646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bddc8e694f8fb0709716f4e15d313ecad587ecce57ca98125bc67f86fb0f43b. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TR0410901912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec29822a316d12b061081113777db4bd4d95a474fea45aab299b8d525c97800b. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/TR0410901916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1eef4e78b57bec692821f2b9904b9bb00a0778c2535efa263f352a16c0c783a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TR0410901917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2048c387085d1204b7cbd366bc835f726e981b4336383da0ad641c99dfe57a4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TR0410901921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa1791aaf353174210fefec2a3c11c49c1d0c41c10f43ce0669af57e5bfa0e5. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TR0410901919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d0bfd994c8680fda828281ffc4486904981257c2fd50e867efa2930dd7a453. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/TR0410901915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef6279b66119774a908fcc0bc575cadab320841a4f7b483681f08f2b77d0395. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/TR0410901914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7957b89977f335af5429b8580ca1f8334268b1f1c6f8d664b86777aba9da78. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TR0410901920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3245f8e040eae6c5c06469c0d978d46a85dd4f192c2224d437849b05624d4b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TR0031700089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae33138060949e8aa9e3fb3475df7d28f2b529071fa3eedf3131d8b0c14ebcd. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TR0031700087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f721dcaa43a66ecf3c410eeab2733771f3c6a7be137be5484f132635a0869d9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TR0031700096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66c34c1d6df88b26e97cd7b5d4851e1e5eee0474c983238c893a7d90e8358cc. 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/TR0031700091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15473ed1685c493763edf1532a27c553a06f55fc27039ac1c7fd26b5147c2be3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TR0031700095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4717f364484b94bca3e547a88aa702815fd668f130f2d1753fdbf2769ee9a12f. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/TR0031700093.
Karadeniz'in Sesi / Kadırga Şenlikleri Vol.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee8b6b7c1ddf29a70f8e62dec93c580b3d42f801fc688e9691567f2d4bcc481. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TR0411102630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7010029f589f6c4b70476f00705bc0ab67f37dbecbdad999051aa941abd861ad. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/TR0411102631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2203fbebff200f398586c6171961887fa9588d5ac93852cf349b85b7b388013a. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TR0411102635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa446cdfc006995727a02ce37e95edb14eda42b554ea92bb9c207e214790634b1. 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/TR0411102637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d5849c459b7e3bb4429127dd076e42b85a77a19bda112b786a20131c8570de. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/TR0411102638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb5a5b1bf104aa0b6b61a2d822c0d00bebe727907f3f8207b8615e9c3ffc765. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/TR0410901890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9400194c98e3db6069d79a298513b6880c68e572ab507b64ebafcaa2395368. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TR0410901892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5f71148fc2e60e8e14393603773c62c776f87d65243e1ea9a0738aa530c617. 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/TR0410901893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052287b0b9f45967ab6c018e34cc6d1d20ebec6468f61aa67cd6c2212e977b12. 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/TR0410901894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe951ef12f5b6593448540606cc6494ba1550bf0ddad831fc0573feeb8e40a183. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/TR0410901899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d41d5ce10dfcd89a7bfb87dd6c4b77c52580d7d323a8569a0aa17e87d06d8d. 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/TR0410700750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120b402ef684ccdcf2f174eb69034a555012852721a6590f07382fe48bb368fd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TR0410700749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f748cb196b6eb2c7c32ba68972cb4de9823551e35faf1034e4514849d8370e0. 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/TR0410700753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ccc8f112d8b6b96f8439b5866d0c953ad71defd7c19eff14184a6b257b79e36. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/TR0410700751.