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 0xa4cc00dec80fdb0827f725c3a0e3d56e08f4124cc55639e8e4fadffb4bdd9597. 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/70f20ee3-c986-4f27-878c-52cdfc92cebe.json and https://artists.proofprofile.net/proofs/artist/70f20ee3-c986-4f27-878c-52cdfc92cebe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x57a3fbac084184f3d373f7ffe504bb07cca8721f4c4379545966b15ebc8bb96b. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:36:56Z), 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/MYNSR0530036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b686654de94ec59809937537cf1eb04d456c05a2581d4b09567a8b82b61da66. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/MYNSR0530037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28377e41a61213b81e965f7c5218e822acccf5de19e156810ccad1196bc964ae. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/MYNSR0530041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ee97f19aaad0d0d8010a36366f43782081c6798ac303a0d7c80e726e240985. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/MYNSR0530050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1719102e60875cad1858f37fe60e4c896bdfb0739de46de58cf5c8a7e701d2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/MYNSR0530053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5683d12d45268aa2251a8f991212486e93ff5bda2fb34320bc707da57e834466. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:13:55Z), 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/MYNSR0530055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa7ca7b6cbad931b928a5443793c46cffa2c087f55fd2d32e2be3e15a59315a. 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/MYNS11131590.