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 0x0813a742aaa2aed6f9a6d2ca21287bc80786eec9cf7759a3adc666ce6a1948ef. 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/8d038db5-1c17-4f5e-a267-d729aeeaeab8.json and https://artists.proofprofile.net/proofs/artist/8d038db5-1c17-4f5e-a267-d729aeeaeab8.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 0x8398bc2fce87d63e32c2efb788a6256231c6ba6653d4dc86067f089cdab47af5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IL1042303051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaca02f3518699408fa4a8ece2336707b68e2d92bca4054afce4858ff217b2ca. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IL1042303701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07660df0cfbc6fe213aaf50f3d68c4955bde848b771291eb8f296199b279cfb6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/IL1042304103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a36d25fc610d555f125e495f0c460c51efa08b3a59292dd63166f06d22a242a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL1042304104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a9ce9d621db1fa0a9291ef58db46329a1700b8951771232ca4dd4ccceaa92e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL1042304105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa44a67c43eec8cff7d86c2c612039ebf7937d9909b28b02c6115554c864a400. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL1042304106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ecf649766977ca7574a17a51933f655756241d2db5961bc8e508e4745d0df0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL1042304107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bd97a0983145704d5283bb38da49f1ddbd95b5f9c724e9a81d865f2522d27d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL1042304108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a707bb00422cd8c65d6d3f102baa85d13eba282e77ee85ef1aa80a4537fe89. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL1042304109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c3231eecdc094439e21584c19145e25ce878550536ca01357c55bd9f60b3ba. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL1042304110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f81a8183368a4e220f2955bfbd061b008f96d2e3966b4b3dcee675cb5c09b58. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/IL1042304111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1cc831ab489dacccb25ecb4d9ce9526533615eb49c489b3e04981c47adad41. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL1042304112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaca02f3518699408fa4a8ece2336707b68e2d92bca4054afce4858ff217b2ca. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/IL1042303701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8398bc2fce87d63e32c2efb788a6256231c6ba6653d4dc86067f089cdab47af5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/IL1042303051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dafd0c7c115c52379cc422314231ed7a643f9ba16219015e7a5114d5533719. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IL6721700807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50253f55a0dd73d9e557e77127d9c5d1e83641c80a20967fe126da9d2bfb63e6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL6721700798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b8df0e262669b3ccf62d3b50be26592cdb490f8f1fa35d1b4a168ec1078509. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL6721700799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a22a3f51b0381627b613ad2ad3a5efd16bd9cc6133bc65f58ca6f43163990a8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL6721700800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d900cbf3f00a82accd97c209b9bd49d00129a857e1693dfb9fb15fd71f74ae5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/IL6721700801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae98f822494f7c028943af6937488b4e823a37c895a7e40f8a1366a6a922a74. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IL6721700802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a0d6cbed295a43efbd77f3d7e6c98fc7b9daca4e4a1e264969d784eba5be8e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL6721700803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b909915d901083f3168a9b28e46e60b1d203633a527b8503068d79567950bc5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL6721700804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc90162e6f75d8bef88964ac239a5447d274676d6e9aa202654756718b3a0479. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/IL6721700805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cecba73ba6e3cd2fd80907ca49784f64f225565ff882925cb50c7b7c78c8184. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL6721700806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa074b073a54520f4799e7ee3537810c63e23aa25e91bf7b443bcd1b756ee2ca2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/IL1042405701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4889e3b6a1aa8f7efe3145a3ab34f94b6c83c6c16bd27b79cd1e78668d6fa70. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IL1042405702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01379cae7b94d46b0d650be0eb228fa17308ea055f4869f80558712f4d4fbae. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IL1042405703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a173dace39c6468a844603557de8e0207fe2a16d93c197cfdba1ba2561989c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/IL1042405707.