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 0x61bea2fb9e843cbebef096a13e450973cf6fe620f7f09b1c4a1ed5a31bca12a8. 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/055e0f66-97b8-44c9-a733-01ad1781e6b0.json and https://artists.proofprofile.net/proofs/artist/055e0f66-97b8-44c9-a733-01ad1781e6b0.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 0xf5a9257b95ea4eaecb635f8a6bb0f456515e58963e520c0a92f8f41d248d7f79. 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/QZFZ42397660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf379092b78ae51971108be65f93eadef5c9d886c6567bde8dd341bf3723e45ce. 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/QZFZ42397661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb254faeb1e710dfa3bfea59e62372d020e328613a4283069edaa53d626253993. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/QZFZ42397662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ed1b4836ae9177c7ee97bf9f66231e181e844020421591c5bb303b2e128c40. 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/QZFZ42397664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5dd4f19228ea112dd5bff2054df5d6d637d3d2f0055caf87ef01da0290fac2. 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/QZFZ42397668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75181cd3e9a900806014ab0664865fde73e9a170caa29f7382f27d3f24d9a2bc. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZFZ62331049.
Tales from Southern Realms (TNZKRNZ Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eade032c7300077c6c5debafebaf286dd1bc02141dc0fb18016f9790c69a9ec. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZFZ32411392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc51e59a501a740d8be679f9458649af7daf424e9bbbcdda673ecadb209710f9. 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/QZFZ32411393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65a809b765cb4bb23682a23721b05174e22a2e27c97c800bd4164df0bc9225c. 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/QZFZ32411394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52cc50db619f3272d9eb125d9177df889a077a6517542223bafba2ccea4b447. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QZFZ32411400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68543f9fb54e0231d5cf0ec882b1b7327b1b71048d8fe69db664b04abac22f17. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZTAU2592536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12510c9e6e1c0ca22f301c1990c0b3873d69a1e1dd88bf9cf45fb4a27cdbd012. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZTAU2592537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fe6a5f8c6d2be930aa6efe9a0972c977ad1400f651a67dd80e5c91e0c74eaf. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZTAU2592538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c30ed05d60a0bf7b904aa334d4d13086e83b7ce3f994c92eaefd7beb5f27ed. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTAU2592539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a5fa9262dff9dbeca4575d6a61f4555bad1289b59813d859fe7e9cc27db3c7. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTAU2592540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf465b37be87b2b5e0b7ce23d2623eb93e8ed64509c86cc5c0afce9bc712b384a. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTAU2592541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc07eeae9d935c59d22e4b862e6e95484ecaa6c9521ffa0476f4f26e70a31a8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTAU2592542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77c6fe727ac8bad089e8fceb0c7cafc4a585fe65f3c74e2609db7214efe8dde. 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/QZTAU2592545.