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 0xa4095085ebc9d3ee4531dfcca94459d604333c4e541a1254109d90782b2f244c. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b30be19b-62e3-4977-9619-0b84dca455f1.json and https://artists.proofprofile.net/proofs/artist/b30be19b-62e3-4977-9619-0b84dca455f1.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 0xfabf50df93c1a611172d3340bc02b777192b322d56c6cf23ec728888f3e1e391. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX872302099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19ba444138d709df359d235a0961b13812261f33da3bc7c3015daf3815d4038. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX762335058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadf0a085f8fbc8581ba87973ba0ed1db47e81e36401dab85dc1fd56a3da6726. 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/FRX762335651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ad56661f514c4d80093f7e738a00d9752f11c8405b38257dc51edafdd4080c. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:17:03Z), 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/FRX762335057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973c719f5c41c3a76fe804579320491ceab826740641e30724dc9344c6041f08. 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/FRX872302028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8089804d931765abe52c9d4877a007f6cbded181e4476539feef764e2733f2b8. 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/FR59R2367669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf146b2b5b8d736b6418c291ad4df278717e592b9c7e768ed93e8d838b7d85b. 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/FR59R2367671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18866adb05dae2e37f0eff7a32a5c5dc4ab4a3b87ea3dc3970a99061b52685ba. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/FRX452379912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c84d8777f2f212040aca3d448349c732f98eb649cdfdf731ea4fb2823168f34. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/FR59R2367508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdfadd796f73a47c2202743f779209f598dc5044f9c59d80a3ce83cb463ea33. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/FR59R2367509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a406b964819b2bace6d5e5de06e545565c3c8c00525b612ab95232f5a0e5ff9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:06:25Z), 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/FR59R2367513.