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 0x54f5baf3f21cb2e63aca83b74672fff107fe73660ced1db0dab85b517eb006d2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/618ebd2e-8d96-4d48-98c2-eeda27e40154.json and https://artists.proofprofile.net/proofs/artist/618ebd2e-8d96-4d48-98c2-eeda27e40154.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 0xeed47b0c87adfd4f0db06aea7b437ab39dd2210ca9dd1e996e1417b199c4c1e9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTB62344582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6eea3b22b8fa08d62be3dd01e9b15f62f8d73dd130bb04611d7baf796be8f68. 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/QZTB62344583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0500a2089c86e474ec0a7bb631a1d4af315eadd1aa7ecd1f5647914bbab175de. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:07:08Z), 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/QZK6Q2424363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc19c00695f0fd281245b9b6e55b5022c7b5faac17fd32c1ee09ee97c05e4e05. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:18:13Z), 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/QZK6Q2424364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0497b26fe823e8a6e82e82e9395d24cae79a2b8cc0f7cd34885d3768f7db88b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZK6Q2424365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff63f70651663110e568848d0f80cd566679f4261f6c319d4694fe758c633c0c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZK6Q2424366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25576decd859d92e9759c791606cf000ac17d19b83cc7a5abe058ec0c857e3c1. 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/QZK6Q2424368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6ffdca0997c9fd9adaf51d2ea2ea7590d9a1831e012cfd917267c53ea8542d. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZMEQ2422028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e97066db9f91ce7da3bcf512fde3d73f4af70ad489a4d81357496c8ebe1d1a. 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/QZMEQ2422029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052aeb33a4fb019acb33febba26ede17731f7f1e191ccf3ce81e36e1868ef7e5. 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/QZES52502393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aaba3cd245a0f7094c3c0b51714eba105dcad8b038a45729190b1b8b8c80769. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZES52502396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92dbb0d664f500fe12592f7aa6d4186c283e13964742c2525da615009392912. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:33:38Z), 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/QZHN32526232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf464fd94f69059b657e54a181dc5a3e22382a514cad1d901b849f3b84d49d987. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:28:33Z), 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/QZHN32526235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5bc46290651ca5f85d74eb4d913bc567e52e6c47ec71bf80644f2c942edcc6. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHN32526238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef1a9446d7ed1ac5d5847390d1fff410035cc92cca9f175be47f061626f2ece. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T07:59:14Z), 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/QZHN32526240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4660c09acc04982d68b89bffba3560fa2bd2cedc8022e76678017f0620372ef8. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:45:53Z), 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/QZHN32526241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64675ca8bd213f3e6962722e8e8392135e959559388368b49e236a1d91b5180. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHN32526242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3733243ae2b755a03362aa8c2fc602a15239372f814e33ffec793cf6d855c450. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZHN32526243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8a6be52603868c29d409af5c928b7f6fe0c4562ea9d305ff4a542a991b0445. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:10:10Z), 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/QZHN32526244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775b6a07c921fe036026b25107d3efebc4de0111a476f0df752d5b1f1cdaced9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHN32526245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78864e4d019d8395f67e540ef942dc2e0fb29b48fe22f08485cfa652fd0acefc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHN32526246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde5a7a3fa321273c02ca4fd788ce7f5566bacbf4ff3d79657e53d419c6fec44. 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/QZHN32526247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec004db59ae66c96f5d72692a6f6ddf82838ba0f886086fc2affea8c5d879071. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:59:35Z), 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/QZHN32526248.