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 0x41c27846a3e3604cd2d62891a149022440cd6a2037072fefee1ee1b7582ab0a6. 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/f9c33c81-8919-455d-b4ae-7d540c21c5cb.json and https://artists.proofprofile.net/proofs/artist/f9c33c81-8919-455d-b4ae-7d540c21c5cb.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 0x40d8e84cc3dcccf4cb3be063632c4169a7b51ad6a938d06ce889ed68844274c4. 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/AEA141605417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af08562c81ad8509d5f0b225bdb85f7ff098c6ce0f27ea4d6d012b392c4850a. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/AEA141605418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd4ed1da315bf356bf3b64cb96eb59ab0b5786d5f68b4fcb398da5a43e733f7. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/AEA141605419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92416dbb7b5b997af76a123914ceb27650d8a3743188865e644a3f2af742244a. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/AEA141607435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a3b521b96a1e6f6ae16fcdcc040e35d5a9de0eeffbabb629d7bf34e9e2242a. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/AEA141607437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a37478453051a4e556c9959e698b9c043d040e74970503cd55c6907e6daf6d1. 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/AEA141607438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9676e3d617d62681e25f4580e0d17f6776b97529aed9c3d4c331cd566de2bca. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/AEA141607439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85ee08df6dd4fdd5368ec7b2caac2c5db8c13b00da7d3a963bb0b8b48a2d116. 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/AEA141607443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde00271868a6a3acea12d8ead7c2777ffa46864c04169f9566ba7057995e227. 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/AEA141603333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf93ad72b3a6e195164091e07125c4c6b95dde4bc9587e8573bf91b56f284198. 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/AEA141806115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c18f2a80060aae2dcfeeea2352542d8f22bd7dc00bde77584e39184f5860c6a. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/AEA141806124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb409fc41cac03c536e555714f4b36dcf7dc89e6c4509acb600d1ca903c1bbff8. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/AEA141806126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa936a152f4790091a05bc1ca6eeee7a3584ad02d00ca98f5506f396ffb8accd. 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/AEA141806129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a61a62e288c37759d2b3b23aa821ab925d7a2a25e467f79fc94a0640a17a4b9. 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/AEA141806131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb08dbbae1e66697163cf8b9c018f6491a8ec43221a6f2d37fb03f9d1bb7889e. 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/AEA141806133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5962c460a5ba019a3be8d0f0b294e572865ca5470d433e063e3ecbd5bd0a3610. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/AEA141806134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac9d2ccc36553563b07e2c4b284d21a1a2c147a68c38ec9c2ceecdfeea0b121. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/AEA142002771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9a622c589ac6b7ad0740bcb6750260e0688aa816391735d696951a434d6a9c. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/AEA142002779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef6fa7665e8160da5bbd6d1035d73d1950965c840546ad157a0838fbe4ac8d7. 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/AEA142002769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a67942d742d46ed20795812203fd61d87f5b6ee35e0479e971df093f7a3441. 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/QZMHK2011761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4eef11dca520a3b7765a71248b0b8c0274194ce314877829c620cdc3c0a654a. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZHNB2187464.
يوما سيجبرك - يوسف الأيوب وعبدالعزيز الراشد
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d40f86028d255f69abf91b1ab6f80157dbd3cc03a60d241e41626aa408b65f3. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZHN42275974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a78e599a46032a2f4c434ac7d5e0bd08a87e27baba195919266d6a199e0648. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZHN52332455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2721c92c67b675dc4961a3705b630b46a8e8086acbb83667eda8be2060137c83. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHN32373809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3ea9d4c4c52ea3a72377cb3903a860a1583cdf102fc964a122b3d55b64727b. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZWFL2335576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7deb456b8c92c99da550baa6f08ea433389a866b03a2ab29e56cb95b342a5be. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZTAU2410821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2f25b81677e4ec318c4e86593dbd9aa19524e3d011bfae64b47cb17dc007bc. 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/QZTAY2550061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c59ddd5a8bca23fde3c02e1755e68ad4dd7c3fa678b1b306390d0f6cf375f2b. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZTB22576365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06477c01c65a9a5093d46b2eba470900dcd1367e941659f47ed8dd5ba7c022a3. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZWFU2541056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404d43bb5581ce3f81c492b65d3ffe188855675183337250a03f8ff5aeb7dddc. 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/QT3EX2504099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7b8fd003e48609f6c003ec4a4606545c6d372c40f7853c224d19e780086bd9. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QT3F62527561.