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 0x8873f7834d5916e2a90d176620c1e9a62fb2463d8de138b28610b0b4035d7ae2. 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/e1c53bba-cd59-4774-8f3a-1bd77006ced7.json and https://artists.proofprofile.net/proofs/artist/e1c53bba-cd59-4774-8f3a-1bd77006ced7.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 0x83c5879426d5dc1d1ad50b303f5734f23effd50d59c1e7bc1f7b42026f7dafc8. 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/DEZ650708989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be162a857a1977f1cb23bf1d0a14459e6fea09935491978a980c8d21408c7fc. 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/DEZ650708990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6919eeeeeb65aab44bdded230c4a90dc904237cf72755f63c877ce3ef369f94. 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/DEZ650708991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3184c7b6e246234498b2142c534ae01a69f14c1c5ae69b85744dcef91a7b5574. 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/DEZ650708992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67385592201aa6c5e7a094d76bfe1f35c7c28cb245a89e006511763797865954. 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/DEZ650708993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c47170480b57b99ef3f0cc7f24d40df78a74ec16831ae74dd63ff4e410cda2. 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/DEZ650708994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d02f344064dfa1eaab69b38588b6a4409707ac622c0fde0538d2727869a6cb8. 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/DEZ650708995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc68609500e9e6bdcafa27a70a191b77b63a889fa0f96b4930f24ab490994d5. 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/DEZ650708996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cc591af41dcb2a3b8aae3f5d25104879db0196c4ec32a3b22b309cd4badd96. 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/DEZ650708997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c7aa02b4ad63ac1600e0e9d9eda0e40bc7584a759210bbf0f5c1868e57915f. 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/DEZ650708999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f75bb02f51e60176311413256578148e334477f3a05e7f381a6bae32b2deaad. 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/DEZ650709000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a1c278beec66ea7d8342eff6bdf4bc7cd52cbfda0a92fbe9dec8dac7974c49. 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/DEZ650709001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c5879426d5dc1d1ad50b303f5734f23effd50d59c1e7bc1f7b42026f7dafc8. 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/DEZ650708989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be162a857a1977f1cb23bf1d0a14459e6fea09935491978a980c8d21408c7fc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZ650708990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6919eeeeeb65aab44bdded230c4a90dc904237cf72755f63c877ce3ef369f94. 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/DEZ650708991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67385592201aa6c5e7a094d76bfe1f35c7c28cb245a89e006511763797865954. 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/DEZ650708993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c47170480b57b99ef3f0cc7f24d40df78a74ec16831ae74dd63ff4e410cda2. 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/DEZ650708994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d02f344064dfa1eaab69b38588b6a4409707ac622c0fde0538d2727869a6cb8. 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/DEZ650708995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc68609500e9e6bdcafa27a70a191b77b63a889fa0f96b4930f24ab490994d5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEZ650708996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cc591af41dcb2a3b8aae3f5d25104879db0196c4ec32a3b22b309cd4badd96. 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/DEZ650708997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c7aa02b4ad63ac1600e0e9d9eda0e40bc7584a759210bbf0f5c1868e57915f. 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/DEZ650708999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f75bb02f51e60176311413256578148e334477f3a05e7f381a6bae32b2deaad. 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/DEZ650709000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a1c278beec66ea7d8342eff6bdf4bc7cd52cbfda0a92fbe9dec8dac7974c49. 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/DEZ650709001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf130784606bad4ba9ac3c88df463678fca1a03c11c80ded0c49ea11a7dc38f. 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/DEZ650510930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2316802895d071a4f25c19d7142ce83bf88a42d4ea4848622bba9220ca9c91. 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/DEZ650510926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4759ca19458c4da8bc2b9e9d0e4a1563ab5732d32bce51c794658849acc4fb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEZ650510909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5779ac89ccc946698046ea182605b965ca47b1834b0cb7b2a19719c1b8c468d. 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/DEZ650510902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0beabf8ba184b2aca72fa846bdae6f17f509619ea810f3afcc353dfd8dd376b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZ650510835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bdd883233029f42a3feae832286f525fa0bd4926b7735f4d760b4e2ae9f5dd. 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/DEZ650510802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91b6bc56357d7342deb7b50a61ee3025bb0b9b04863b59b14d1164b7871d839. 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/DEZ650510671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7066bdbc9ff43cd46e95ce8b2341f59a73d846d4a935a1b8871cb857ec7999dc. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/DEZ650510668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f31763d9f05cef5e8a6da180246ab590a4b361362721c594ffd8fab33e3b26. 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/DEZ650510658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553efdd832a7ab7d5fe1e3a348f4c11e5f988279353b573f889153afe9e8bc7c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEZ650510650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4223a57ecab71d452e1f2a499542eaf04426a0e2140b82db8d1ae87872c0409b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEZ650510647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80927013eb66f438aebf184c6bbc01d9f6e5a649164cefb12ead823f89cc47a0. 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/DEZ650510605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3299756bcfa3289e1d70e931fa076e9192ea84a440259a9cf93a9e1b890d52bb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZ650510644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27406f43f4e6fbe751bc9328b9550920665fa5845b4bdfd1d9a5d23d39d3d406. 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/DEZ650510579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6206e5a7630427c93e87b31abb6fbbd21402451afd96b6c4ad358b2461c34a64. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEZ650510949.