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 0x06a8f66d49913b008be2caf1844f6c796a5c5aca3b06a8c05813a0b652b00f1b. 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/70125ea2-2b07-49df-82e2-f4c1d38b1594.json and https://artists.proofprofile.net/proofs/artist/70125ea2-2b07-49df-82e2-f4c1d38b1594.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 0x37bbe4af5c2b2735152a723707508b5b43eeb45c34d470f7cca9a5e8af6dc215. 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/US2BB0800049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe628729b25057f6fca3e72d64af94aace1779e9357140a25b6cb065e20033321. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/US2BB0800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdd9a2f3a2033dcd2f860957fe6bb3aa35a6e666ebd9303dd13a0e7c143db63. 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/US2BB0800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24663b1a30ee4514555053c9e66d839721a954f67fc2fa6a71d2498b8f04d5e9. 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/US2BB0800052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699b7fb9191ef57226fca78a112d23dc96411f35436b00b1ec3787b179e99af6. 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/US2BB0800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060575681dd33edc2a6b76b1ae02f915d774b46b1b7259484e64be2c5ccce98c. 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/US2BB0800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaeaa3c9a95cd322f6a47785c66c38aed354c72c86195c72f704ed8652475673. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:27:24Z), 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/US2BB0800058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7771d38f76c5e8f1386c2074931a49a641268ce5f73467e67ba15b21c6f9bf. 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/US2BB0900097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5fff2272659411418ec8d67bea86ad3508f8b0fa8b57cb88a45ec7f4ea79af. 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/US2BB0900098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa440fea547f161edce9c99943476811166953d3d6e82f0c8f1192e1ad2b5b108. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:45:05Z), 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/US2BB0900099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a909cf4020e90e9483b5474c52a871ef3e3bc330aaa429660fa887b1eaa197c. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/US2BB1300137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4aee8d6e944bbbce94665e4eaf9ab73281f684f9ee5136269c23038868c62c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/US2BB1300138.
Alex Theory and Shiva Rea Present: Rising