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 0xc9bc357158271286c62644d61909153134f2fac274ca70f899f6138b7baae8da. 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/54a5eeb8-7900-4ebc-aecc-b1b71c74db37.json and https://artists.proofprofile.net/proofs/artist/54a5eeb8-7900-4ebc-aecc-b1b71c74db37.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 0x369023b6466637f8b44adb981e50ae9048720501bf7f308428b360da14ea7e90. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DGA082288803.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80b349ae6bb157cff9305f0f24215d84b683c1d971cf7acb247325cdaf1a51d. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FRX282333853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8abdb4f93e25555d46eb035726e16275f561a64a220f48413a7febfaf340dd. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAHC2338914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66721e93c034facd5b81b6dec6277586018da383fbc531e0c94e009e9459260f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GX5MX2359246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe752f05efbb217ebfe49da9f81e2c4aeb0d18af367e66dcd9856d74ef094a8. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/ROBRA2300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540d302f53925f8fac054345c7bfb493dc2667dc8fb0ce2237d304e466ad6b11. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ROBRA2300232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471a7fc1efacd60bd76b50bdf7a3bc72e18b1190a8e8641d89fae757fe4bfae6. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ROBRA2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d416adf8061240018c55550f3052f20443665c12426ff768d6ee6e53c8ba8bb. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:20:17Z), 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/ROBRA2400028.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bdad86b32f2e24344a51903d2ea317f0429bcab6d177d7d1ddecd264c9cf3c. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/ROBRA2401829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11558bb9592858885b4e558ff666d919db09ad91c9020c0e8eca3bd17d9ae07. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCAIN2449770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f62e7196ddf8c2c45399f99115112a806d85b44585ddfabd78ad752f0f9738. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/TCAIQ2483211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd508d5eaa1459c86aea44e37f878dcedfeb0d23df83952c7ac5afc4d258a38b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA0H2462570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a81d35056e7fa7ce8e51ba952fdafda0610d4527d9c5bedcd26a61eeca0caf. 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/ROBRA2403895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22067ca9e2981561fd2b404de9f64c69f1e830e41621efe5cf9eb7e43f018a6d. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:01:07Z), 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/ROBRA2500964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38c4a11df1e8c04fce9ef4eb7f21a431f2adac324627b1642b29d0d80fdc4f4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ROBRA2500968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68955b065d71c57ecdd0f2b23af511f3d2386f21465e999689fc3706f3ac47b0. 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/FRX872517963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02234ec30f6790617c5dd3e936824a5dfca68c1d0e706c074623ecd246411e83. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DGA062580320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc790fb1c4ed71a52ae4a4527bdb70ad791a887d6bf801e6f158c41f11b15ac12. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DGA062301519.