1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x9a004e2b41484518c00011250d498be5e87a5511700ccedc0429d7e629f78d23. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0802d083-5714-46e2-b2bc-4069cd9dfab6.json and https://artists.proofprofile.net/proofs/artist/0802d083-5714-46e2-b2bc-4069cd9dfab6.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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0xa1ac4c973adb3ad4436f8066f6f3a54d602084f8ec53840dae08740deb100415. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:58:48Z), 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/DGA052277831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7defcf8a8b7bd1c407b9542dc607b91d16748c3bf19b4ed366ae6694f51546a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DGA062212183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c2d86538243cffff1f26950a147cf7e3b931cdb128502f9df17da57ffdece5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA062212187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed543f3c110df9c77f8d036932f9f419b382989c469b896a7a13368b241b6353. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/DGA062212757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea531ea460d5b314251c20d7bba3f33997a88328eb3734157790f77a380d9b7. 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/DGA062251836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d726ae8f7c34ab886bd992ea677cc05850ef2f882320944120425aa81d148cb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX452480431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03e13e7f2bb7c2528c19887d701a0be90803de11778950a5fc36c90acb36106. 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/DGA0L2499462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a40879067d3e6cd8a2abc386611be3b3f5cda5f4847a8c0b9b6a8ac1d6d0b87. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:57:51Z), 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/FR96X2595821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55400a132384d551345bc960f6bfdf3b3809f60e8540fcdffa7202109a422ec4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRX202544216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187002e6c99fe23dfcbc77ba740b1dfc1fa6e9b4a641ae87d2517efc5245388f. 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/FRX872545736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80415e42688907bb16e51e47343fb9b9b3a5b96e442d80b1a46eda6dc78748d7. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:19:11Z), 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/DGA052593824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e1ec474b81a7812c312ca1e120e7eec8a1d9e5334ed6bf56276a85d9a5ec75. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:15:52Z), 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/DGA062514362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f0aa48a0aa8a88f11ccade62ffc6b486327bee9da83a97ee56ddc3d0de52d6. 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/DGA072509832.