1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x81366d6123ffa8e851196e57e46557a594c5052991ae1ea911109fb551b29092. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e4df389-f054-4614-9a6f-759c67b4d8f7.json and https://artists.proofprofile.net/proofs/artist/8e4df389-f054-4614-9a6f-759c67b4d8f7.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 → block OTSBitcoinBlock must exist at that height 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 0xc5e1436de46f099e3edca764b0a19e136898660a22520ff566fa9bcead34c30c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ATN261455801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8194e2a7bcda538583ee79bdfe3b8d8cf5e182082d62adecb3b9f485fb7e7a93. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ATN261455802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d3eedc9fda6d9c68bdbd189d44c486b3215ff3375832a063914ff29564dd67. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ATN261455803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5c44d603ce57cf392dab3eb1f1acd4444ae65c3ca84eaf32b57e2241d6eee3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ATN261455804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bbcdaaa50f22bd08c264e42205bf9a8d8f9fe3923b4b088cfa40972bfe3ae7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ATN261139901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621a9e3d8375ee585be89ba0680f6961299c6f3a1232b509e6f3235ecaa81e66. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ATN261139902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7afd6122d7af0231347b86dfa41785851f05d444a69d534b06a568b651c243. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ATN261139903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed6e2646163e8adf193f23508736cd29b8f4df15c83ce5ae67c138645599dde. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ATN261139904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69267fe91f9ca36fe528e823469ac8ee7dd8ef89191e665e250f92711ae082f2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ATN261139906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0213e2acc37d8b682cf7caad5d8fe77e02e9d166e2925183569c3f180bcdbc56. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ATN261139501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa585223005f6c15b53ed76d22213ca332e4f04806714b9e81f47b795e9f742b2. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/NOERN1002010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b02beb1035947fb5750b51ac274af8ff8fe544ba219d47448a79b22eddd7e4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NOERN1002020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10946e48941ea70b3779796bcb635e2f75f4edbc0ecd1e4b1dbd87716b2b2e70. 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/NOERN1002030.