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 0xb474cfa2f4561ad5e92c08c98f28a6b2112ee6b31ebab377d774e5a70c7f1342. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08435355-f8ea-498b-b967-815335d02f17.json and https://artists.proofprofile.net/proofs/artist/08435355-f8ea-498b-b967-815335d02f17.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 0x395d90cbab6a66ea2c39ec84737bd4f11b330145ab18033693868edaf46dcdb6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:16:50Z), 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/QZP7F2402575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8f3dfd4e45afe0a2a2c5ed664f26b08ec9cb72cd4765034455b0f8ab45bb82. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:57:27Z), 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/QZP7F2419620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989ff669e2f843b603d6f40405152e0ac30c2ffd8697155e6d7142bc2cd64fca. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEXO12422741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde93c5c332f470c70ffb90175cebfbb567295903289c183c37d215e2ddf67325. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEXO12422742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96f62416e65a5e6958091d0bd252aac3e06edbe6cbc7fdcc32d9a396a54030a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEXO12422743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce0f8f641562c6ce16e308adb4552e06e357d86e3745d93725d23a2252cec7d. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/DEXO12422744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de5c6c00ebe0243e815728b26a454145894d278b4ab51f8535919be44822944. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEXO12422745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec12fbda433b5c6a011dbf6870591292d3957430bea2807d174840f1f185c1a8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEXO12422746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2479738f0c8131c6b3b2eab1f6bade0e16cf5ee9a046e85684fcf168847a3b50. 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/DEXO12422747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82d72973ace51988bd3c52c1dd13f17d4834805b243c5f647a94a83c1fbd852. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/DEXO12422748.
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