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 0x9dfa34ee80c358af99b4dbaa4739410fbe741b7488b1fd329d1f4fcf523dde85. 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/64f1bb3a-b19f-43d9-b402-426fe8d568ef.json and https://artists.proofprofile.net/proofs/artist/64f1bb3a-b19f-43d9-b402-426fe8d568ef.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 0x569bdba9011aca2de14017dd0f5c8bfea2f5fe6eb85e185ed77a3151eabc43c5. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:44:07Z), 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/QZHNC2384319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd668956a7e032ef3e1c7ba30f6442c5e986991852638410396976c45bba0b32e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZK6P2402094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13df4e1135575a6387d43ebf53f70dbf999632394cb2850d583977f22d94eae1. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZK6P2459261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734e93be15cbd569242827ae5926eab3676423ea95048205ede1ddbbb7e04482. 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/QZK6P2458739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a0024dbb2315ebc1db84b8d4d663bf95be8362499141ad2a251cbb836184fa. 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/QZTAY2439610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8f8901606750b8cde1bc497b565189f72aa938e22a4be3ad1e1a57834556ae. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZTB22477349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0683adbf69fd2f04ed85e58e2c765933945e88b0f7cbd0981aabba7e759318. 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/QZTB82437306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fe2f017a4660337a43aa2ae0b73391603ab3377f70ee233e7da2926c0cfa91. 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/US7VG2598415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56418fd68b936b2219f2b71bf631fc0660a219244987dfb9a915d702ba297cd3. 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/QZGLM2598342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ccb78d6bc200fd30257c9edd193793e9a31fe753c8fcca0c8f7fb21f4edcf7. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:02:45Z), 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/QZGLS2522276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc096c869d002255239b3d2405a2d0f1952686917bfe0f7418838baa47cbdad. 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/QZMZ92589965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15895b6917b150782374ea6a69f4af77b76d2753e641346cafdf002de0fc13c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNJW2571195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1073145c384c470a6caaa8c9bb1fc036f8e9675b8975b295027cfc97a7078f24. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZNJW2571888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c5609244924663ce09dfe8f87c269ebd1e590d7915952ffdcd85b32aeded0e. 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/QZNJW2590423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b56a41a5412e1483e0c2d135ff1b9400707ed6f9ad35362ea367e8ad8cd61f4. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZNJZ2579951.