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 0xa2ff4b4e194ef7120d3697f9fc01497077f38f23b9a6692f02b21f23936e321e. 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/362edd55-771d-460b-9514-61fa63aca990.json and https://artists.proofprofile.net/proofs/artist/362edd55-771d-460b-9514-61fa63aca990.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 0x5d9585df05ac2f6c0a1c61442fec7158da9416ac1a07a2580c99926ad4281623. 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/QZNWW2438897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893fb91608537121c87a09cb73f356687c3c3da14af8666c347d81c5ae982ef2. 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/QZNWW2438899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a9a0eef66705c923c3d6e2a617f103d8b6368082d076d029177baf4ba42ae2. 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/QZNWW2438901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0979bfc7dfebae597c7e240237a6b035a259e0f6f5ae304571ed4626b4e0239. 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/UKZGC2404457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0addc1649fa0c0ae081dcf274dfc8de12d56725726a13f46275a6fa11b570042. 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/QZK6F2401820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d7e492070bc2590d0eabd970af671c64a69180a28be55c97370b14c449c647. 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/QZHN82486036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a29191e46f7ef1a4c20eff2ee8aa0400d06ca76d449c1a9e99599499c41ce74. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZSY62100165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19049225fd5e1d32392eb1bf29fb9961bef186f9a2756c4490db5b22708fd124. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZVEM2341949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d44233084548bd179829562a7ca809aa6e5fccf8d6e3ae57d7200ec4c204832. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZVEM2328918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfe6d8b3e2294757f3dd0ed95a86b00f3d8fc0f8e6a73a59d5f0903827ed549. 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/QZSYP2281972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde59e5772f3226ffb9a917a48927d2965d6ed3dbd8493a5c99588509b13fd8ec. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZSYP2288766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3657a1957ca286aeb4ee27bb81d00baaa864d4151a3b57727300f342593402e5. 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/QZTAU2238302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6fbead4368a70c8d9035b9e348c4c6a69e04da827b0b318136336f0e17cef5. 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/QZK6Q2258965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01afa72020a36796125662079c03e8a1b3b5ae02368012aa498009b7f56cba83. 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/QZNWR2180760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7a0e9a1687b1c4ffa9f3bd52841ab16c06b66d5ec583eea22c9bccb093e16a. 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/QZFZ22123303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055df8e6a9e3e407de5e3f4586b350742b2d60b3a6e80b2a068753a4d8cd142c. 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/QZDA52088282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35494bb4a37895d52dc761f64aad92877d107a2415dd9056a7cf852346019916. 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/QZFZ62005374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49dedd5a681a9660381b41fc8c3d87704fa8a12a89e9b860f9392d1754810b9d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZB4J1862343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe9f4f9a2eb55921c5672f73733ac170b09290fa459a752ce43e473b7b35fab. 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/QZES72386955.