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 0x790ba953294e7e37e86a3868fcc77f9ebe416dec28f7469bfb3206aeb6bc7687. 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/17505585-0387-4466-8b58-daafec6e6c86.json and https://artists.proofprofile.net/proofs/artist/17505585-0387-4466-8b58-daafec6e6c86.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 0xa6e1fe6e2340a694c0526c8d68100891c93a456a29983f9f7618b82647a584c5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR59R2236920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc943a631302aa40cc95a3bcd26e1f6b27707fe91196175f33a418fb5e111cf5. 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/FRX282201114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80e3ff5610f66f69cfbb45d8abd7b89ac30f2b9c2f540300a1018595385e2a2. 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/FRX762220659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea6fdd89c4a74259ce93d634df1b1da099e513adfe7dbd1b675596a0e26b328. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:53:51Z), 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/DGA072362076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809d31538282486976290f846e4eb90593d46ce268f0d8eb15fa01cc9b43d8cc. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/US38Y2409456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255519ba66f85bb779adfb34f1a024abef0da37f22e54b21b161c3c7ee650676. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GB6LY1601459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c507c7fd74649394add0d6f9f147806331ee4f274e9322abb0b17e8fc7608c. 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/UKN6K2401573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c507c7fd74649394add0d6f9f147806331ee4f274e9322abb0b17e8fc7608c. 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/UKN6K2401573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7dff8775b6f29ea93194be0485247b6cc64c98bd6429ca0c41ff3a05720807. 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/UKN6K2401574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfa60cafc0da640d68d80c6781a39a0f23bc442d38621c331d766df1fefd0f7. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/UKN6K2401575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36efe09fffaf13c0f63a69dbec8353f668483f1f3d92af7f3cf479947a21a0b0. 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/UKN6K2401576.