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 0x69c32d914a625ebddd1b69d25269d3fca1cc47554f4a394398fcb7abb37e93b1. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4f8c2799-6219-46f7-931f-d8586331de51.json and https://artists.proofprofile.net/proofs/artist/4f8c2799-6219-46f7-931f-d8586331de51.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 0x2cf41e10b75ca9db67c4006e7cd74bc7b0a6aee01371fcc351e9a766acd8f590. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:21:40Z), 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/QM23A2500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734e7d87c61fd9d673ec1e4dc41fc2b1b15042b0f65f6be1da3fe1ad3cd12e7b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QM23A2500053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd097e7b990c70f47e76ded4c7408330186e802c765cb4bb6fcba88810905cb92. 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/QM23A2500054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1f0e1a604ce849e997f0febe24253461419ba9e615224fc6e678e7eadc1bf0. 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/QM23A2500055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20c5fc4fddb565451fd104581ae2f7ea3e4fc5ef608632f7c06cf008eef515c. 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/QM23A2500056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8830f2c34dc13d548b36401ce6361fd53c0aa7c9dbe7e8891a87875ae5c27dc8. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:41:09Z), 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/QM23A2500057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e3a8780c3f0c1f06d47c4291b41cf6ce4cfc983888b53602181ef9e55162fe. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QM23A2500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15339bd896cf49b12d5b8fcfa33587fb3716d70a76a7f0e9da4adb248208d10a. 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/QM23A2500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761eaaaa0317682355121f5eaa1609b0c0adc6a5c82697e062c810ab447c6938. 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/QM23A2500060.