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 0x53b63e303d70b5d0e90f9c6a0e50a41847f8fc6a2debdeb5fcebed4d3facedc8. 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/8349c657-f0b2-454a-a49e-c498341a1553.json and https://artists.proofprofile.net/proofs/artist/8349c657-f0b2-454a-a49e-c498341a1553.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 0x573d88c8599614c42f23848d10e90dc5ef36cd05415817fd06a6d252b693f881. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:43:00Z), 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/FIMPO1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2274a6299614f45b257ddc59b9ce1dcf0951cae6cf8d23884379a8a6cd038670. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FIGRF2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7bbe7bdda6e678298a3aa043af1b0cbc72e000291cc118b27aca6521951073. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:36:41Z), 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/FIGRF2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797da8ade1c97b99c276400015e14bad87580a53e7f9c575b8adea7fd0554de4. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FIGRF2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492e32ea140eb89e5f22950461899dc9a39dc1972ca4eec7047e95146c3ec473. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/FIGRF2000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616b8e6aeefa6dd87215d50194df7b0e509d50ec22c2ba0ec4c3194047e682ca. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/FIGRF2000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27db6620ab9a409ed734f708e3d3b1f759f9cbcd927d88a632a4e12660ce170. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/FIGRF2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba01eb77262c8095112a910f69fb429a999c92aa9edba9e22fced9c029febc2e. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:16:25Z), 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/FIGRF2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e52429c102bed75f224c784afda6b3957718c4c653e4837d667212bd99d8dae. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:53:24Z), 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/FIGRF2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafef17adcc9b2c1b432218dd848c5e78d89a6c64bfacfcffcec6f4c3a42c44a7. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:50:42Z), 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/FIGRF2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9903481255daf0303c306cc0becc25d2e662dcf9d8f733d3cd4d099650de7af5. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FIGRF2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477464d0a2b05aae0e6fec0849e9ac2ee0dd812fc295a1a0f225d4bd7dacdc36. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/FIGRF2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b08676908d501f185450ebe4a21bc9501fe8496270d599c510b41ab6076381. 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/FIGRF2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d0df97d2ea8d58ab9018a6df4689ce18a146d633cf5199d270975b47e4e7d3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FIGRF2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29157c06462c2c4100c3f9408c2294d10178626a4862ddbaf4c5edbdc1749d9a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FIGRF2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba8dd1490c19432a2c1934e217d46e7df8e09beece585171b9f9d52486ef75a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FIS5V2000016.