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 0xc1ddd5b593e392808c3c2214bf257cfeb75769abde856fff52df3c116135e8d1. 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/688267d4-f34d-49da-9523-48856a866912.json and https://artists.proofprofile.net/proofs/artist/688267d4-f34d-49da-9523-48856a866912.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 0xad0581bcc7c4db3790bfd210b78d41f65522b4c887315ab25532b03df40d3c67. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/INK602413282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afc62b8042eb190da8d11235301e9c7076dcf24628c9f0eb27971c80365d5bd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/INK602411526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188c4fd09b6a101e92592572d037096586095efe528cc022e83fabafc57d7a77. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/INK602307896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4993df9b7307152140cf875cadadbb7fbab663ca90c7d46c8ea6ebad85e8d015. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/INK602204460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff421474637b5e287fc8f56eb09f193c0facd24520100a74d0ef86d03cb0597. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/INK602308232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e033702a4bda3f21bc0a85ee6ac92354408def2f3e213ca3fd78e42725aa465. 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/INK602308248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc445418a2d2047bf1b116807560b67bcbc8cad7edcfa24753431c85f2f4e10. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/INK602204524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71140e147a61d1f2032acebd15e422d22ed061fdc3941ab56a750fc30b8adc65. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/INK602308297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364a863ffd84b5e09003443d0bcda9946c63ab4d22d8f34892b5b6d6a7041277. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/INK602308286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ae0bca61c60bb2df6e8c04a34f8eff1f9432e1cfc2ce9dd3498d89912f9ea3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INK602203946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1417b9ba14625a0e9868fb6017da0118ec6aa6c80c853dffe3047890b708626f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/INK602203944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a2f18f30123377012241cbce7b83c16f1e512a43050b3a2fffd532424bcf89. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/INK602203947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53dbef3d9eb5baecdf65e09bea7eabba147a92adb879ff5be1fb7ca2fa273de. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/INK602203948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e76da33bb20966d7d7b20073374f6cf2fc7de666b306bead57dc7dd2b2d8823. 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/INK602203499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0531cbfbf9aa80c65fbe24eeb1013c5fce7826bfe0b6f3622537f0f0b3e38ed. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/INE182014940.