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 0xc3fa88117321e6ea9ea1517c2b885f0147c80a2640342ae82725726d183d9442. 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/1de78e36-018f-4796-b80b-43a1b675a223.json and https://artists.proofprofile.net/proofs/artist/1de78e36-018f-4796-b80b-43a1b675a223.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 0x1c365a7a85d7c34c4adcc5bbdc5f4de6438aafb223f5df0ea64acdaf7676fcc2. 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/QMEU31604263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b30bf82d596cfbde810e8eedb030c22034502143f2dc35b03ced82b365cc21. 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/QMEU31604264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f82755c77d9c1fe2b3594fbbc699a0398755de4f9228f3204771c14c6553449. 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/QMEU31604266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ce361217a370434fbbb4bac5a1a1399cc2d479969596fe0da6830dd7b299e3. 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/QMEU31604267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6f0d813cc16ca37c6b0154a789c5df288da6edcfa9623eb41a4486ca5cafb6. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/QMEU31604268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc13a2792fa2797da8e5fe9e6a4434e46d1070c62b50d7a590e8cebc17e816e. 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/QMEU31604265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1305fb760e196c281ec29f6ebb24c5b431f1b464d4a8823c980bc0008975111. 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/QMEU31604270.
Van Mijn Wijk Tot Aan Jouw Wijk (feat. Nansky)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b57a65682f928791cd9de55582e9544a1fffb6cc0facf4774c5fb28a33f21f2. 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/QMEU31604271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6638b0b9392657439af6308569fe15d3b145e7d5d5cd94a4962141856ef6833. 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/QMEU31604272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4416e668a82b29da06c0697447d06b5170736c33829f2732dd77063beb813f. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:56:23Z), 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/QMEU31604269.
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 0xc226b7a560a9ff2427a364c991e4f5ad66ed09e34334218ec2ae8bd4108839a5. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QMEU31604262.
Schenk Iets (feat. Priester, Revie & Royschat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05e02cf590f7f43ef48ee367b99cf1837b76af05d61947c4bdd9ee74301d55c. 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/QMEU31519162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07723938c9daa0a78c71f46abd3a750768afc9f2656cf1671ed6db9cecc88307. 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/QMEU31519164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da8943d6bf97187dc0a43a7f642fd2e75a2272f76dba7f3787a47ed47552288. 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/QMEU31519176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2aea87c7b5ce8854ae07746e676081a23915577e3173488d0f3d4e46d72d40. 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/QMEU31519169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1b554a9164bdfb5f0be29af2205f7871ce7c3be8ed6de729f1e7e786e3e2a4. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QZFZ62410432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce9d14aaefbc53d867522f552b13a0b3c28131f2572f5a4e6b2fe3df2583d30. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZFZ62410436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c893360988dfff1c1d8a400c5f75236459a2e007022dbcbadea9901bb493c2. 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/QZFZ62470398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa397b28e0acbe285b074fefa0baa4ceabb38928fae829795296f47858cb71e10. 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/QZFZ62470399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e307a1b5a4cd89aa6103087a0fa489ca85fdfb72008b7e41182828c18c36a1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFZ62470400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd03d7373ec64fd6d9867c39b51bc18aabe1465b7cf462abea6788822d76b2f1. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZFZ62410439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bd94c0978352974ac5305cd48b073e5e2e70446abf8617d68add14480867cb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZFZ62410440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18423156bfb4111eb1d9e1f27b77b36fb619ab2280b528b8dbe0f7fc3b5b852. 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/QZFZ62470403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07591b4f300ec11d703829bfbb8c24b53dfa41d8583cf3813d771ff6e1f12914. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:07:55Z), 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/QZFZ62470397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a16a0dd05d8103d1bf6ccf829cddc4910a1eeb77bb68002fadfa90d1728d4c4. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/QZFZ62470401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c38b54c111e98aec54e7542cb8a762ac25e1c7dc2b172b5dafcd0d37767c4c. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZFZ62470402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde38f866b7547ee6a779d082d22aa91801dea187ca41197fe098ccd79c694e26. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/QZFZ72497757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd5c9cad74bd80f585f7275ec4b6812ba61ffccf59ab43825549cb4eba33797. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZFZ72497758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b6bdad26800d84a74b43210e59f3da4ba8158da8f8fa737445ca58b59a494a. 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/QZPLS2512177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb580e3ead7e5ee22e5235615eb1629d5b47a317ef2a9929dc70886eeb079d5. 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/TCAJN2555574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc225a9d1bc36d2e65deb8162549da656b580e6122ff5b1a0eeb014f2c0f0068c. 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/QZTAW2426244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fefbf88ec999d7285cf05faf9f86982bbeabc2336187677bc9e1ccb1a589e1. 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/QZPLS2473811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0773fa0fb3d69a1c60c53c5cd7d9b0a8d3c379a287eb629349293606f63308cc. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZTBC2323205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5fb6360ee557668f9260fc74fefad8493a772da28dffc7519781a4acd3a485. 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/QZRP52309034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8faed532467b1d5a221ce3f8771eeea4c73461aee4206ca9ce77ae03feb27b00. 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/QZPLR2277714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06ba3cf682000a666ea308459750b9be31d5663789461c90e2dd88781044e48. 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/QZFYX2243937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb69eb7bc4464f6e9e3abde22cca566b43a7ad809037227810005d50385d6982. 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/QZNWZ2109433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3be45f86b126c9be6b401cfc66de8b536877d497855b51490d5834a41eda92. 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/QZES62110202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7e1eeac208ab25ba2a21e206a8b83626ea5f7493bc62dde9a9e37cfc243d3b. 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/NLR2C1700002.