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 0x2bb82944779aedfc1c8a55dfd22c081bdc14016d4cbfa538e76393669a0f7e5a. 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/ae284a6c-54a7-4fd0-853c-f9fa04f0f105.json and https://artists.proofprofile.net/proofs/artist/ae284a6c-54a7-4fd0-853c-f9fa04f0f105.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 0xae2f052834d6f18b1a5f820f45ccd3313dd346513bb008efc90b3822378144f2. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/DE1FK2310003.
Sag es weiter! (Das Leben schwer nehmen ist einfach zu anstrengend)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc53dab75df463e72902026b49bc1e8e766da62d1e3d488ce2fb814acfb1cef7. 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/DE1FK2310006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d9f4646e3a9305da49da978596ed46ffddb8c5a80997ecb67cbc707213c24c. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DE1FK2310007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2844f5d121b18eaf35ab8a90f7acbd30bcf1fa3959826338d5fe0356e11156e4. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/DE1FK2310014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ee190ffc1700bab7397ec7d9b7130cdede34f8641e2b967cc3aaae895419e0. 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/DE1FK2410001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971f7c6c98efcb48ac193e5be61e2777e31e0e6a4b007210ce150b5d950228d3. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DE1FK2410008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319689ea106ca116e94c767812b92ad20f4e616be60425ea827b5d12a843c9b2. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/DE1FK2510012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bd53a77c43aad598305f6ef852dc0447f7316e23ac49ed1c0d003c7b4ad5e8. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/DE1FK2510013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d22d4ba753851d84dd0b287344e6c3cbadac5fcb665f1cf1527746fdc1ed248. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DE1FK2510014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70fe7adb7f978589d8f5ba4904d9fa2136ba9788faf9dceb8962079852188e3. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DE1FK2510003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c90f8ff0f94f6f4259e8a2b37496f9ad6659ddeb09d1cf6a98eb5ed3cb0bf98. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:35:35Z), 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/DE1FK2510016.