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 0x4c5e28bcb5d313131bc4ceedcdac490c7fd6ec0dfae48b42554089b606996e8a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22621852-42b5-4f3a-a54f-9f21ebd3f370.json and https://artists.proofprofile.net/proofs/artist/22621852-42b5-4f3a-a54f-9f21ebd3f370.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 0x46a657ad7da9c275f838a67ec075e70a68d50d13968b5c262abe3b305b12f93f. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FIBAR2100120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bed40a671ead2df4b078fe5de15431c4506496cd8f37f0418bed05c4783b5f1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FIBAR2100309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed93899dff652e7c49565238951e697ca75b209ff80a6112a6c13d5bdbed3725. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:51:37Z), 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/FIBAR2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb796d59fd4d1d4de207c77d6f98477f3a9470e21ad43713e584b4f9b92ca7720. 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/FIBAR2100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a657ad7da9c275f838a67ec075e70a68d50d13968b5c262abe3b305b12f93f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:27:48Z), 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/FIBAR2100120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f72084e607b8047945cbff28095721a48d49b0053a8c2f9ec4fccf5e4c9fee8. 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/FIBAR2200298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b9be887228815afc4822943b379f8f0724cc4247485c875bba36a855efbea7. 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/FIBAR2300443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3796eb51a8216d013fb45e413d5982bdfda749496f79b765d4e7f016271ee1b1. 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/FIBAR2400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ca4c6af0f04a1bb8e31b65d9b7763a88debb58f45d219bcd322868929d1d8c. 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/FIBAR2400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976bbaffda52e7d5a2e0f6ddb4d1d5ac7ec66c3448c08f0f3c7bfe5bc61bbab6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FIBAR2400396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6354e76df00c8950d78a2079a252062ba9a3518eb7ed30e832fb9eceeee3f942. 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/FIBAR2400287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b9be887228815afc4822943b379f8f0724cc4247485c875bba36a855efbea7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FIBAR2300443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463e10ec9394c244fd8f157275784d38050385fd6cbd4743864625705c977aa1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FIBAR2400397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f72084e607b8047945cbff28095721a48d49b0053a8c2f9ec4fccf5e4c9fee8. 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/FIBAR2200298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3b47d60ff4a653db0125871411433db55622b057f6130f8009f0dd903bd7fa. 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/FIBAR2400398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3796eb51a8216d013fb45e413d5982bdfda749496f79b765d4e7f016271ee1b1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FIBAR2400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ca4c6af0f04a1bb8e31b65d9b7763a88debb58f45d219bcd322868929d1d8c. 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/FIBAR2400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bb5b49a84a239bbb3d9984c2070a9421914f0c96a8b9e9ed40a781109d8285. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FIBAR2400399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8db479bf44b3376e3f14c91976e14c395e93df0aa81957f910d3f64ff13cde. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FIBAR2400400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67c31362dce7c7a5a83114b76cfab18c86411af0ea644074f95bd70c5f5a40c. 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/FIBAR2400401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a52bff08f53cabcc90640c7db99cadf896a8832699c6706e81aad0cafee8fe. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FIBAR2400402.