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 0x8075f3968e9fe05fab7cca06cc19b880ee44154dbc4bbd7270c9e65be8a5aee2. 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/81ab2d05-23d8-4a87-a5ec-ff8990e0bc09.json and https://artists.proofprofile.net/proofs/artist/81ab2d05-23d8-4a87-a5ec-ff8990e0bc09.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 0xd003b254486e03310b815f73d8c25d81222094fb9cb984fcbfb4c233768af363. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ESA012132902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955533f9f215045d3c65fd50134ed42ddf9f5188ed5f452362bf97deff955765. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ESA012132903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6878ebbb0087498a870b7bbc002526751bce51b347d5204e5dfa0af294c61118. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ESA012132909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c4370f8408834068b31ed3e7547f62fa68d37f77291b48411c93786af445ac. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ESA012132912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe023bf08bee2245864b0d64a2d87d295a1e83d3ced86591ade5cb274222df9c5. 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/ESA012132917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3162d49d0d3d892f903c99c9805aa957df481947e57e4c04640215647f99c207. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QM4TW1952348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef4e41c66daadd09fdaa35b516c5f4822037cd12db50fb6819ed9c2d0f0c9bf. 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/QM4TW1952352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd506312d6cda073cc4cf9ec2df604350dba20ad275b4c6aa446b044df2cf982a. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QM4TW1952357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512438ee74673f0a508502eaa5bd117e08124283ef41763bf4d3b6bf9dc059d4. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:45:57Z), 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/ES31E2205178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87434bafc150534bd4c53cef7fadd2b11d2fb886489cb702c7be92f4a66974ef. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ES31E2205511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba73cf61a8d77d33076ef331360aa9a91f78a04dc42bd56ccc0dfda11d96d7a0. 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/ES31E2409561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd6e9def94078bd8c8757409904b75976ec33adba1f363811fbed3607cf334e. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/ES31E2406656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e1f2e37db9cf9331198280162a60d353f6639c8dd309b2ec1dd3cd03399025. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/ES31E2411990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6814ef35ebef947821b10605f5cceb05182cad409a3c97d103ee28c1eeb4a191. 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/ES31E2409571.