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 0xfc6bf176ffbf5c01e3090547f327c5b9265d89e50e6883e4d6bb503589b2b5d7. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99981549-274c-4d8a-8748-20dd860e8110.json and https://artists.proofprofile.net/proofs/artist/99981549-274c-4d8a-8748-20dd860e8110.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 0x16b5fafb209c1fa21d77b4c7a258661985e29c60a9ad723e834d81a07740371a. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:35:08Z), 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/QZZ7U2589648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99526703bfed2830b1cbc84e7692bfb12c19e5bc23e6e187f26d15abcd43632. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZZ7U2589653.
Chill Horizons: Lo-fi & Chillhop Escapes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae7cc4d0e8ae40c36f045525aab53d3cb93be63aa0191eaa1099d3034836699. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/QT3F42569220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4234fd8c80506bc0330420ac2dc939a03f2cd729cb2bc08e43e02bf84247f5. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:58:10Z), 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/QT3FA2587524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8a210088777bfe121308d9600681e12ba7d0f3eb8c3f2c3a1e4770ab29de7a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QT6EA2551496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9557f4b1cbdc328c452cd126a06ab411cc6db7ff819f3f7903533828880ccbe. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT6EA2551499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6f2ebd75c2bac33b32953e3261ace16a7efedb1961e6eaf5767195451b121d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT6EV2519512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc826e9f93a5781bdef56710360e76fd40820039790707512725b7667d5c26a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QT6EV2519513.