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 0xcc96a393c1f4e92a4f3afbc41124bae44a5eb0ee04e78a5c99a360057befbb12. 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/8e09d5d3-1f5c-4b17-84da-19746baed0c9.json and https://artists.proofprofile.net/proofs/artist/8e09d5d3-1f5c-4b17-84da-19746baed0c9.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 0xe99a1c900501af2f575100193c5e3bbff2c72695eb0afb171f1f4224edf59bb9. 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/QZFZ42344445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb15fd5c502f042bf427b5698e347a4a1dc8fe68e805e9d3414d144b93d4442. 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/QZFZ42344446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8d1e0fdd930b7a58098e82108478cab6c892858853e099594c48ae2ba8a56d. 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/QZWFN2319342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4ff191b455422851d9d6ba63858b74945fc625d6d8d230af72f8011274389f. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/QZHNA2492490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab1004642c730dcee77fda2f8dada86e7cb9726f531edd09e2fb3d4e29a7fd2. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZNWU2437834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaee138de46dcd66d70c978f2a6cae55e9266de57f1df72ebce3e26170b68a2e. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:16:35Z), 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/QZPLR2458494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702e729e036b1a6afd3045c4a0c22ac57377b9a3de2124a34d5cabd18802a9ff. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZTB62436208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ba5eaae1ab4741904565715f03078d7e442535d8b7339fc62d877a1122d6f7. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:42:33Z), 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/QZTBE2449184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230b460a00192c7313602db1d35f012d21f978fff4996aad4e48fdbbd790dc65. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:35:43Z), 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/QZTBE2449185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b92ea838215f81ada55efab58cb1e25b31827803047f8740989baecdb863f9. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZTBE2449187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0511bed71710b6ab03f7011dc6c52dd072146141c9068f315e15aa527951f3e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZTBE2449189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c56dcf488966b696b4b412266d086a3ffac49b68fbeeaf191563ec522046213. 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/QZWFQ2465929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffae173d2c5a95bae4bb86c685f70d36622254ff1153146c2757d7d35f1d2fa. 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/QZWFQ2465930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a5e4743eedee8e6239fe161f84af9e213d8c562719a0558b9e152a1385946a. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZWFX2442367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c38463bd82a588722d01123fa98ea8aa8c5156d49cc9282fa97133066bb385e. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/QZHN82548385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9b27af4a1225c36aca65e29f111e9186ab1d5571d97dbbf1770be287594841. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZHNA2547803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5fdd6877361ad4be7b27fe70e86dd9884223696d984da995bad8e0f66d6412. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:40:43Z), 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/QZNWT2555058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25594d526a8bb3a41945afd6a8555493f8104d602aaaa8641d6a74e5a10a5d82. 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/QZTAW2585089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad544f5a0d2643fc91ff9204af35812f6eaada8ce856324eb1405634f048086. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:14:42Z), 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/QZWFP2534332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9cb3fee55200920d4d992143ef0573b2dbef80bce170b02b8163ce254b3da83. 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/QZZ782555731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0e1ad351fbd6d364b0e6390c88c2fc85cae37fa93748612fe79b7cf2323285. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:10:38Z), 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/QT3F22518125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084804f029b18f99fd833dff48b642a7920a7ddd8bdbeb0801d7baed4f5c8452. 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/QT3F22518126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07185c4c985b89529883b81634b12696e5c1f6638d5e59512549b9b6010d95c9. 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/QT3F22518128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29980a427690754597ee9d39500e5a4e8d884a4c6c60700fa43b79cbe050b51. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:19:13Z), 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/QT3F22518129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425484cd887b58153a1775976f3d30afe584ae9384ce51a058023b84d8195a57. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QT3FC2568141.