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 0xad3e881543cea4b6a168911b599ba2e7e602e7aff8ac78b8645a0db75d644337. 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/f5021e65-2bbe-4704-9c5f-34a88ec4aa00.json and https://artists.proofprofile.net/proofs/artist/f5021e65-2bbe-4704-9c5f-34a88ec4aa00.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 0x364c3cf6feffd672343213b62aeeb31da417ce0f71596b0cb1d3a6181dbb8263. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:58:14Z), 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/US3X50915704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d8a75775b4dad853e02f5cc0c179d96b08100298dc42c778bdada326c87b40. 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/US3X50915706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7db346af1b9a557b1f80972a49fbdf46d7601ea106e90226bef3f3e505d0f9. 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/US3X50915707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d0489c52b5d5196ca8e365bb080f62911e8b82934dbaf5892037d9c1adf9eb. 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/US3X50915709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a87a7d816671172ff65c2e49d8c392e4bb3d3bc7c7fe9204df8814091dec006. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:54:52Z), 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/US3X50915712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230cbc20c8ea1b272855c9d6c3cf3643f85612f79c10b1af0e4396c833f645b9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US3X50915713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be1ec77eb13a75c36d67705ac7ab6512f1dc85b2fd6301f828c964de76b4e4d. 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/US3X50915714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fbf24a1a0c06677aef46c3e4cc9687a1aa856f3e81c1aaba37fcee041191e0. 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/US3X50915715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6bf7f8ce1ea3f43a05c06c224178d3a29d4a190449de57e6aa270d048cf9e2. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:33:25Z), 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/US3X50915716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e79cb0545f22c3923a83912f09ae58889045092df827bd8020dfade06cc3507. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/US3X50915727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a9425ea16a81aa05002119c0fcdb248ef980652414c271be9ee69c00ae5491. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/US3X50915729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7728880b841dc39e83284e1b378dcd8458e850f396b48d7c71df362fe8617d. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:26:36Z), 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/US3X50915732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41657cb7450fc7cf4f28d6356dddf9b1072822f76b6e3244930e77424b1c2997. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/US3X50915736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5130baba406cf784d944dc0edd41af4b4d1bc01433756b5a96d8e00b8adde3c8. 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/US3X50915733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e2e459e25f955ef69f0c93251a85ac26c858bbfbaf6c2e0504b2eb57ca1c5b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US3X50915735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00f11f71d61c3f5c6c0b5ea3b655d872cd96293c401cafd3ff21906ea3cc973. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US3X50915720.