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 0xb1efab38502dc32648efb03bce64c6ad385156f12873b70eff62c1edcaea4a94. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/131f7151-0136-401c-add6-9e49cc5fd1c5.json and https://artists.proofprofile.net/proofs/artist/131f7151-0136-401c-add6-9e49cc5fd1c5.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 0xeb35808a6eb58d21f3699ce89c9b7cfcae59156a16f9f721f4f992441f61f41a. 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/QZNWT2358178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c8193249f0e6dec9a3247ee0f31b0e2f79fa458d9d3749813e01a0d9446bbe. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNWT2358180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8181205d6d3467a298ebe958d2eca662348737aef87921088bebfdd5683f08e. 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/QZNWT2358183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe370f087aefb84806a4a4070d2486953528f95f965ed9ee35fcdc14f9b41a112. 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/QM3DF2105960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95faf1996f55f56e651f162b41650362b0da2cd5ff53b78d61b64820f97fabc9. 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/QM3DF2105961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1553023b36280ef6d7ee833635a733037f14ddb489abe34f4ff5dcf222f03c. 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/QZNJZ2362939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1abe731cc912225c2de44117e487612fa7ee8c912ae212069282902ee354b1b. 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/QZNJX2474979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c37724f737211db423777702b5e988bade8e0e5655c5203ba6ed92bacbfbe97. 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/ARQIW2400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6639a36ae169fc0c898d2cabaee96ff4dd76a03d04f9f0791e6a7b524d411303. 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/DEQ022391505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb904f82d87bba85fa18beca021df01afa44dcc88fa91757fec01be8193324636. 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/DEQ022391509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3263c6be8979e32cbb9697bf439a6d7aaa610e524b2903c47956111d038deddd. 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/GBWUL2447011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e561d1010bd4077364e5e0c1dcd3350d42cbadb834208b0320ce2a72cafa95. 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/GBWUL2447009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc183441e171f89fbf1773aa0ca52411bc06b5e7cb94e4ab8e767c7e90711bea. 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/GBWUL2447027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1c282c02f6cbeeacc928f1f1a90c66fd950440907932bb42a2086e0196f026. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZGLM2379337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ed67a15ae67927f0fe953e30a37a823c1b675ec9559359b768ee7e40793c6f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBWUL2447023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f31d2ed330cf92d70d7d6d67f89da700c711d1fb74fa01865326402a00c1cc1. 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/QZNJZ2297253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12dfa12b4e61f712302830d36917e8a460b2dd7149ddb0dc950729964573f33f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM4TW2397062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40b528239f832cea2557d540e4d3892eb240c3b28d331c964a7794b8226556d. 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/QM4TW2397063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ddd910722fff926db553c7dd6462432d561905534b8e68e0be39cae33aef76. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM4TW2397069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65037a2e72e1672a724c071b3295fff3edd5c087bd5dae5e95ae6209b4d92ff. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QM4TW2397073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c16ebe7f5cfc8263de9f47eebdb604d21d0a05f811fbd72ad96b75254ea9036. 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/QM4TW2397074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95811f348ff844827ea70f7a2ca11947e18fd4d3c675f2f1acc602c031a16015. 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/DEQ022390266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fbc55768ef20e8d2daad69c128148f36afaac4acb4a0ada675c988c6db5caa. 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/QZGLM2593634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe370f087aefb84806a4a4070d2486953528f95f965ed9ee35fcdc14f9b41a112. 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/QM3DF2105960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95faf1996f55f56e651f162b41650362b0da2cd5ff53b78d61b64820f97fabc9. 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/QM3DF2105961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ca56399b98667ca2f86b0fa5f38d717f520b8cc4bc0d576dfdf174daf5fe20. 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/US3DF2533668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fb91603b75b7d5c71f9dafd237950b8153e8efb98b7a5bcb32953b26210d64. 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/US3DF2533670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878613b3f32d5cfa392e97b7fbb1450aef3ecca54a30bec776d1ee4e8e92956e. 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/SE5BU2418170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946b7019aecc7799ea92a2a306f2ee04a2b2220fb73aca5e8a2e5b41f2c36edd. 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/US3DF2533672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1c282c02f6cbeeacc928f1f1a90c66fd950440907932bb42a2086e0196f026. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZGLM2379337.