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 0xc4c6a4af361561d4f19b33bdbcbb65f1e64b05de736c0a9bb726306edb6ba513. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c48bd489-927d-40ac-acbc-19a6b27f1413.json and https://artists.proofprofile.net/proofs/artist/c48bd489-927d-40ac-acbc-19a6b27f1413.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 0x673003795ebf9adff7efe625caee1e0ce5ab602aa53ef1550bf37e147bab389b. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/BXTZN2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b6425a30119352fd3387f21e40716c2d7647add239f5a500aa6adfe30ec6a7. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:10:45Z), 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/BXTZN2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de487979b91bf27c95786f445d1ea66b1612c424769a3266b11cc8ad2d93844. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BXTZN2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad1fa83aa618fd9c806a992ac8d4f7a70e8d1294447d65de60dd782ad553ab5. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T05:02:35Z), 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/BXTZN2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620e41b90c6218d6ee4160aca3fa665f5dbebc031946e4e03429450b6f5f5c4c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BXTZN2300006.
Ainda Vai Piorar Antes de Melhorar (Zipeiro Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad1fa83aa618fd9c806a992ac8d4f7a70e8d1294447d65de60dd782ad553ab5. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/BXTZN2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc029415b1d18ce08853e6cd90e7d4831a99c6649632b4af8971db0aea7cf3e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BCG3O2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f6d5a03a5584e3cf6412f00fc5d353a50dfe09371532233b0d91a8caf7bda6. 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/BKP5A2400160.