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 0x492b662a0425a2fe356d5cc2225abcf0cfa66cce6415c67be71365219d01048d. 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/9c1311d0-04c1-4046-9489-d1d00075fe60.json and https://artists.proofprofile.net/proofs/artist/9c1311d0-04c1-4046-9489-d1d00075fe60.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 0xe76facee50db08ceb777d29e56661a17f863af2966b809d243af598a072eea9d. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QM6DC1706533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fd81ac2c1b9bc4589663f665a6ec0c264ff67eee11d8ce605162b5d9c71a93. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:33:00Z), 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/QM6DC1706536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0cf87d2b1dc2b97c41047c585ad7a19b0162c7de683ec4912130dfb6db7d58. 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/QM6DC1706538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31038c92751e654724e2a845854cfa900e14517de3b65550266c03289d01d39c. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QM6DC1706540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f9322f818905bd7819cef8f57f26bf15b081a7c9c6065c7a66b4e558cbb4e5. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:08:37Z), 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/QZNJX2008299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c8f604e64da565a2c265cb170cdb331d74af17ef1524b555fe1466d3928e5d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZNJX2008306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37aa74683c41ddb26710b661c86c48a4063514044e9d6af5936263043d7558b5. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZNJX2009574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a5c208bebe4b616ba9d9fbf713f34c91d0c958cf5b5d3dbf72eb103ee6f8a9. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:02:33Z), 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/QZNJX2009575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d48f8aff98ecf6a820f13be98b3f582ea556727a170f2d784beaea6777cf33. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZNJX2009580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a9b57e347de63ec43373ab4ec9bf0dea5081916e2558901a24368c2c8dfd66. 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/QZNJX2009582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3569bb8d4980040702eaa43ba6f5470f7a8b864de19cf4de8c3f5d9ae5939872. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZNJX2009583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81ffa8cdfca074d1502a26c22729099d3571c2d7de35ea14b3a82050dd9fc88. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNJX2009584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6fffcf697b17b69365bd6e318a7af5c331d8d70ff92b9d1f9fc782fe3d3049. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZNJX2018738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d753b96ba3ad0f6e9883dfa4256fa762bf9b670fa9207b6b32f60b444fb03c2. 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/QZNJX2018739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1828e974b20f2aaf63572a29803fc5b8dcfc165c1ce3eea5e9351d250a874a6. 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/QZNJX2018740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036965272fa7c7c3e860795eb18adccfb26801628e881d4b8a0e91c3f523ccff. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZNJX2018744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf100647d82848dcf925690db693e72015cf69870451933988fc1bd2457ff4212. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZNJX2018750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4810467ee1c58a4ccbb8b3e23d10f021fd00f775edd2570e82c0c4b556fd6b3. 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/QZNJX2071764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef7299f6f9155bfd04389d8bec3eec1b9d6402f4ccb4422ae68d29d1be6972d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNJX2071768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b3ae04f228110574e70a964c57a6b18b2b0ba7e04ab8a4e00eccd25ea879cd. 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/QZNJX2071769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3f601c397dc68373572f89a8d835ce1ce7be9560fa819834a5c8ce4f18b022. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:33:42Z), 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/QZNJX2076242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb148c811682f50dc58bf535c2b23f5d52afb254ce8397809a92005476e62c8. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZMZ92182943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdac422374bd8de98ea3996a7a00a83658335997d1cff74e46186facff88518. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:18:21Z), 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/QZTVM2143332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98aa90623b6c10b4602bb3a523d6e8d4c6ab535f7bbaae1d024c37d48ee887f0. 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/QZHZ62237384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5a8a0c7ca17a815fdbc692be87acfd0da431c4bd382ed8dbd01fa97dfd00f0. 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/QZGLS2323971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f0f042441d3cde224d7ca1f2b66e9e316daf8deb5e3ad5646a92d879cec27c. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZNJV2491467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f789916bb016f76d635c6088c400ec507efb95bb2affdc4889e2b5f2ffc949. 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/QZTVM2483339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90bbbbd636fa1cb23a2250f2b485a33d281f55d4f85246b76c1055e655fade5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZGLM2559065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10161637eda594fe80ff362839b48324b0f91a7999176c5df8e73ff364cdad6. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZNJW2577448.