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 0xf876862df5486497093ca805eb1e2bad6f629561242ee82df6773629d3fbd199. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4fe2f5f-ea4a-4184-9e7d-ecd93b91a838.json and https://artists.proofprofile.net/proofs/artist/d4fe2f5f-ea4a-4184-9e7d-ecd93b91a838.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 0xc90b5bd2db79381727d587901f8547c79cc05720cca213199d9c5c20e7b50cab. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:52:53Z), 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/QZNWZ2005363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70c4a915f59db615ec9d14be803fe2ad7dd77d2707b284aa637fd33db376731. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNWZ2005364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3091d419750f9196b17f297c0a8c34e4aa5d63bfcde2f0047ceb2ee45ee3ddeb. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNWZ2005366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57910cd5272aa3fe4e6725db532ef6fb439ac346563245621472ef4af80c693. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZNWZ2005367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132347c16835ac8d62e4bf09d2b6d8f7ea2bd33214f2ac0fbf92e42f1fd7d2f7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNWZ2005368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdd9e701d90129f1e9bc0fe5b2048bb83cffe2e58be07f58d676a97d95b3da9. 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/QZNWZ2005369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae527750df20ad5869fb3648d086717b85a9b377cbce72ec1b634b4602a4b097. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/QZNWZ2005370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42483bd121812a023fe38488ed34e59a7b1c3828076953dc8cae1ab4b98dd218. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZES72150825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21dbd7f7b34c456b126b8f8f31b1fd6ad5ecff7a23ce57093fdd6498bfc1d194. 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/QZES72150832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96329a8d1cbfd55fe3075891140eb825f50636d9d9761771793ef1c6086c2af4. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZDA72259414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed4e26902126f268a3ff17cf14db4a455da51f145d1e84006cef2aa42e1eb3f. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T07:58:12Z), 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/QZDA72259415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9405e2a47805701a12dfe45f138bd1e17e31639d341dba690526d72bd6be04ee. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:52:50Z), 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/QZDA72259416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35b67577358d0f9cad8326207fc20e04e1056743f3e17824750f16d555efa53. 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/QZDA72259417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9b54cecd38ae49995ae7384365ef30438e21c57c75e84ff69984b6c3317424. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZDA72259418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447c4aa02218d1b4e748debc13c8deb86db33bc7871cbf2d8648c4eb1c1fa9e5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA72259421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca83d9bba962c6e0c5c1851687927e2d54ea3b1b381494e783b2719b928e52b4. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZDA72259422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57edfbd2e1a7f25d5e89a09dab8beb135c0f9a64648eebc2eb1b410eb493f31. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTAZ2367488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bcb8b1538a8348c91b7e46697fe6a0658c0b39a0d2366c0b7f724e90f6b1cb. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTAZ2367492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5480dd8204e5a3242f3637dadabc91fd5912831c536852d57dda9245bbec4328. 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/QZTAZ2367493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6984d38cfb6e8dcb2d6078aec333a4e43b07988178f711d71263188f50de20. 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/QZNWZ2403941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8d8a90c57eacd7d1a27c12279f4a97d6b2990c652e240b2b01595e3013e852. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTBA2489886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900ce38bd1b30a479837b83e6581b31ef42b6e7e780ce1f0add6884054a2a390. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZTBA2489887.