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 0xc55c5dc69f6177c43fcfd8262991b47e717ed1f51e767ac78af2ab9bb45d0b3b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6132f643-2616-4466-9a44-969c7fdbf590.json and https://artists.proofprofile.net/proofs/artist/6132f643-2616-4466-9a44-969c7fdbf590.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 0x42c42203aeeeb525b437f43415c28dfa61f8959d8b4b2c1445f74d5637df095b. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/PLL021700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d9c0e2daf2f7e9ab0d0f2bc0156bc54bda2c92f80c400ee08fceeb92f07f2e. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/PLL021700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82595ce555a293c9581d8e5cc8d3520a723c06ea62726c143d672aca183e7af2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/PLL021700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafddff5fc6a45b4ac791e9deafb2d69bffa701714171324d05f34587d115fd4. 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/PLL021700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930c6f65e64f6cead370deda2588f7320a801fee43a5332f5b630bb36667f27d. 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/UKRFZ1900052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8451167ce9ec6eb48f0f1a87dc12131a6e54cb71d8dfb5bf9de17c2536ab4af6. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:31:08Z), 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/QZES81824046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f11113f26a9cfc14e1226af7c1a084d987cdca68df48e64cd04ca381887ae4. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/UKRFZ1900056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e7bf98089b81138553c02b5c422f5fdea3122a84deb64cdc771e4a093786a0. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/UKRFZ1900057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf65673885ff2d8351dfc54ee2f175f31ed7e14aa36ff7e57937cbb60e98dbe0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/UKRFZ1900058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd11bf3759ab3f4f79c6c656c5d3e33aaac8f13bfc62385c6ce0aeb54293fac. 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/UKRFZ1900059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e685b67aca686675da14e911aea8da7da9dc33ea21ee1d291a080c35a1755cb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:42:15Z), 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/UKRFZ2000530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1804980471352d9ccb526d7d48f2fea04f6c6a13d79c179bbe7efd7d9f58b2a4. 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/UKRFZ2000531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb450f2d41da47481347eeb4c07b08970eb8919f9351dc77793441f485a85cf7. 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/UKRFZ2000532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a3d33ac293a6e42a5ad7be98ebdce1e03da645867b61a15822ebff955b522b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBPVV2004042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e701a1286100010742d8bcbf1159309210b264aa21fab881e86c302bbb8cfd. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GBPVV2204717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb04e242cdc055722b1292c30a2ed58629d2636062ddec861c50d0f20c639510. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:44:01Z), 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/GBPVV2204718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df0464886a0a9a4d1664956ffc9344170b5c20bc2f750d165fbbb8e6970ea93. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GBPVV2204616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedce4c534b63cdb4be2b41ee0df0946948f0771af81e74399f0fd002d43f9d7a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBPVV2204720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafabd6121ec1e191e79a3b2ce51a0553e2ea8160bdad6fa284e88823ac2c9c95. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GBPVV2204721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee66a8fd627ffa0e17d1b455ce9165e1484854811575db43afec7c84640a47ff. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBPVV2204722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1089e3e25832b443238140d742429114028d0658ddd2feeab17a822ad9ac9a57. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBPVV2003787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aae0de9e88bb1d07f46e773d85e948136dacd3244741784f0acd4ba8d496392. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/GBPVV2300636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6641882672e1983e5056cd0e22d9e260d4881933a537b43c0e38e73ec1aed5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:02:04Z), 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/GBPVV2400730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8eeba1f81ca03bf7754a953f2a343b8a9df284a04f92ec802bf0c4dcb74403. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBPVV2400628.