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 0x90ac7a399294024c77252bd20409a17fd831539558efd62bc9b534c83b289c1c. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0fa284f7-ff9a-42d5-9286-b7de6f96b6c7.json and https://artists.proofprofile.net/proofs/artist/0fa284f7-ff9a-42d5-9286-b7de6f96b6c7.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 0xb902fba74b58bce35a8a19b11561fef28d4ffed13bc2be1065f3e3f945769f48. 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/GBENT1641503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a73a8963c9b0dc3f88728d7f7bb2fcb37ffee8a010da7fa4176d3230fe0b282. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBENT1641510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d39745ad646f072081fa41a96f4274292cf34987630e722b7d3f54d97dd43db. 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/GBENT1641511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a73a8963c9b0dc3f88728d7f7bb2fcb37ffee8a010da7fa4176d3230fe0b282. 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/GBENT1641510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d39745ad646f072081fa41a96f4274292cf34987630e722b7d3f54d97dd43db. 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/GBENT1641511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394f083340e318ea96566b6e97384eb0380b19d9a72d3423924976162814a96e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:18:51Z), 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/GBENT1641513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421fdb066f12f253d9c9b83526fa807d45e81366de00480331e83e451902010e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:57:28Z), 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/GBENT1641509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a73a8963c9b0dc3f88728d7f7bb2fcb37ffee8a010da7fa4176d3230fe0b282. 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/GBENT1641510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d39745ad646f072081fa41a96f4274292cf34987630e722b7d3f54d97dd43db. 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/GBENT1641511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6ba5393b1c4b1c0b9cce4c4498970cd6d3c162689cedfd65d1aa3acec9f47b. 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/GBENT1641514.
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