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 0x4fafff8aa68f4592f4cace584ed7c524d3779783b90266d4f37cec6534db6d25. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/765bc324-99f0-4bb9-b3a6-8ce1cb3103e9.json and https://artists.proofprofile.net/proofs/artist/765bc324-99f0-4bb9-b3a6-8ce1cb3103e9.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 0xac610cc4cf24c4f2e83837508fa6d5aff71af890b5db9ff6fd5fd2783bc08b54. 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/TCAFM2112727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fbab0caeb33476c60a3f4084d29a3464b43fdc25eeb9afcf812d71f00bd640. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/TCAFN2143176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51b0a9079c8684a720a99be4fd2aaded8d8637340d7d4d44cad42de78ea07ff. 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/TCAFP2140307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c2199ccd16505bdbade2145cc00d4a6e784c0d9597037609e44a10b7f34bfc. 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/TCAFP2140354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c27f39c3e321f9bda5c3f93db31ef45758b3f423420c7ea0ff3db05846cd19a. 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/QZFZ42234980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa1f5bef4639a04e08651cce7b8a4ae35a42a9f5ec573cd3a68add5ad7a727b. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZTRX2325887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5789a355d3808652e0a472ea2511fb07d17285879875bf4158f0e7ffcfd62e8. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:38:09Z), 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/QZTV32313450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d73d2a5730b6f300831e881a6b284ef2f0d85b329a169247404ac0c1d9751f2. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GBWUL2505349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53ea37d0cb6d5090612b2e26a75f98fcab8eb92ae4008bb847b4fdd71baaafd. 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/QZWV32541385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc827a3f47bee1c72adc89c38a8109381806e803453ba17935991a60d85639b05. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZWV32541415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcd3b65d0bec0588e6a16deacf31cacae14c5c37d92bff52298bf788cb0c8d4. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZWV32541428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d79481f6a738845dd07c79be3cd76ce6555b03325681893675feec0304dbeb. 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/QZWV32541457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a865f10255e309cd408a1d1500e4ef653032621e841b3ac680dcce8823c646. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZWV32541512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51ff76ad0c3ade3db40f6036e8ed5116c7e2d98c2a1d61580c9228b31d4217d. 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/QZWV32541569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b290ea662c1b2d2d35973541ca312675c853e2e1d857d6d5d61bc9dd0c19d9. 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/QZWDE2507565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6205e2cf39d0503bd684d7da38921c992a8f3f3d8d00fb465ae58473892041a2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USZXT2350912.