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 0xd004fd620d74c0b8ec7d5ac988f4d435c3b341f47f299ca52d49380c91835fe3. 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/82cbb2c2-14d7-4cc1-89eb-a5bc4162e21b.json and https://artists.proofprofile.net/proofs/artist/82cbb2c2-14d7-4cc1-89eb-a5bc4162e21b.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 0xe75689902082d73d10d417224bfd45ebf88c9df319bb3d3d4476130a7482e7bf. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:05:22Z), 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/JP92A2201765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476bd7ed7ce471972f957d371f3d1ba507b12310cb84bc1b8ea7545d7b33e6b2. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/JP92A2201766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b3327dee38fbca6b34699f4fefaa9d07cb1da81ded6ca715cb45f991016ed8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JP92A2201767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad986528eef0ec2f47c67919c19a57d8f68647bcdd3e93b435b9f5116c6d9927. 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/JP92A2201768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b8b8cee539a2a8dcc7d89550a79382572852844084caf4ea3beee418d54034. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/JP92A2201769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ad4defc29a25313d92a509e3b61c1ce899753d133cb320c401da282aeda232. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/JP92A2201770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a09676e305bbcfd8f2ad9f9e8e58681240f70136ac503c2d752dec4e11ad26. 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/TCJPX2396701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcbd1dfa040f9109d4f46c0398d7bc7136f59e64f8a5c22203778eeb3972c3d. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCJPX2396706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec7995bd4ddfd174c7013e207e21bec23884b512814de2dd3ac4fafbb87025a. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:42:35Z), 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/TCJPX2396707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5f787770d99dccfbdf63a81d8f3cbdcfae0b0ca7d6ffc1738da3515b7af4a4. 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/JPC622501510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5f787770d99dccfbdf63a81d8f3cbdcfae0b0ca7d6ffc1738da3515b7af4a4. 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/JPC622501510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f70e8ed2523584903ef874d276dafc1dac3341cbb7b15e75ad80d9d5255046. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/JPC622501511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5efce95ec7d3ac60e3276bc13559b403a2678651dcc99ac81f014a034356813. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/JPC622501512.