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 0x97778718f997c2c4371275e30a85b0a59166e6dcbb45844d2ca90cf7f79cfccd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6c8f2fea-6634-4b2c-8c5c-ee6869e95f7e.json and https://artists.proofprofile.net/proofs/artist/6c8f2fea-6634-4b2c-8c5c-ee6869e95f7e.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 0x7a57632da2bd09aae1765e799e75a1c8c976a9e697c1560baa892e50d499575d. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:01:32Z), 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/USTC10712706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250881db94e1b2d5f85973aefe08290b9efa9ed44aeab4fc3f9618b03ba8adf0. 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/USTC10712720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102bf797cefb0540f317f0dfacc30a642609793c26b1679aeb13010f4df1ff00. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:28:46Z), 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/US5DH0900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ff19de6c65e3c1b12a1cdca0f4dd991df8151248eb2517f31caa4349c5163d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US5DH0900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19203ac425939c0b2aa31a081ad5610c984e4e8bb45ed374bf7b7434240fe603. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:12:26Z), 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/US5DH0900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a08bc9a0aa54b415c696ac375ffbc20ec80b860be703ae2c451479db44d385. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCABX1496159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21920ebbd6fa881038849958f9805c5bd84607e54b90dd5491632f4e99db6e83. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:00:49Z), 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/TCABX1496147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e242273a9fbc1b417d6869613bc6f00572e3adc2b41862b996b2cf21df1742. 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/TCABX1496150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5febca7d9ae90870514f99f5532b268a692aeefc845d228ec539d48f5fddadfd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:00:52Z), 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/TCABX1496157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eea81508dd4916faa0b85c707990c3f6bb9f2ae72da01520faa3b44c6da2265. 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/TCABX1496158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc36ef2ca22f4ae6989c20f2990d2090849edaf9f8f1e7f0409ab205eaaab487. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCABX1496160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b8b892b9481b2afe8037fe82b3d917e8cfe9428601b15821c4e9aeb0415d52. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:20:59Z), 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/TCACR1659838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4147274a6c8d30ea23becf55f07fd9266ea152b03429a8dc8b92709af95247. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/TCACR1659840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff88272c6c59a04fe66495c02e7ee27d4ca7bd11672f5708b27f62acd99901f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCACR1659841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b65643ebbff9c77138130ef7602ec72d4a6e0b94497523cb08e6fe4ce7f3e5e. 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/TCACR1659846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bd96bc5abd317ad57c26a7c3b198ea377baa52fcda6cd04d19a9556d3fd346. 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/TCACR1659849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5e9ae808d0d5fd292f093408ee5b046f9074969d3ca7fa638b2ac151d893e6. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCADZ1859060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fd1c8d8e327f866cbe8585616926af57e206fa6c7a0b90ba68a33ca5082212. 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/TCAEE1982667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0558eeed1b49910361bc21e48ae0956c10ce1c5f72546886cbe3dad96d48fead. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:47:14Z), 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/QMEU32122749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7671037a66294ae3b1d6c87a0b3dd6950800625115e274e81ad9ad12688c7b. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:47:35Z), 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/TCAGN2297931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0544bfe19b1a64b5f2bd5d7f5caacece298ca96fe194fd3aec41afd58e8186b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAGN2292880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b60d494994b46af9f183466c37fb97ec6a96f7d716cdd0904a9ac47ab100f25. 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/TCAGN2297789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270c987e853c4e5a7c77ecab64cc5cdabc8b099464fa66f8c8717b7f45650070. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAGN2297833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7eb368e45580b6bbfcd630415b9832a6b61b1c0f20472c3748e2296293b2c98. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/TCAGN2297880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95a938c70ecd3cbe217e914f38348eb4b2624d4636072dc826306a1dc5e3dff. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/TCAGN2298132.