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 0x3be8f3f91d0f78fd76c3122f93835b8728a929ba489f78eaa6e3b5332c0d5b44. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c2b3977-64ea-4c86-938d-2ac9e88a51ee.json and https://artists.proofprofile.net/proofs/artist/2c2b3977-64ea-4c86-938d-2ac9e88a51ee.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 0xa923b31c3bce85fa0ee0bcf67e1076fd01a48680ed5565e5d9273ee7086ec710. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEY201800218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1844064e4f36114d14e6a0add5b1441a0283c69832511ecc01767c744fdbb819. 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/DEY201800219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e25d03297f6284acae6478216261226d329e2a2de96d99c5aa836243419e73. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEEM71400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc264e401edd156779f7f9491903d10dccde407b9ada9ec58739b85a80fee3168. 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/DEY201300330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c49faaae84ab47836d0ec55eb0ef55afdba4506688271d092f47b753043a57c. 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/DEY201300331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20953c43230ed17b8451073bab1d1b0dad0906d3e7a422093aef4b0caee8c449. 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/DEY201300316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb0c52701f827f0e25c244ac0dc68e93b758d70945529f3958e70fc923728ef. 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/DEEM71300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ff3bde850002f1d3cc9673577387e841e405b3ad9e240ed7ec905501c1b84d. 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/DEEM71300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfeae14cacde19fddf03ac2cebc0e803d340ebca222b47e2a2a3e65057e033d5. 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/DEH741119168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ff4aa61a76648b4b3d707a94815302528b5f151490ff583c64c8a10f795ee5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEH741311138.
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