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 0xaaf99d4f122cb621634158bf6d4e10b880baf4ca4b47b6fe93a357828dc3b579. 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/014f4370-5723-4f88-b84f-991afe046ac9.json and https://artists.proofprofile.net/proofs/artist/014f4370-5723-4f88-b84f-991afe046ac9.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 0x0f890fcf5d58f5d3acebb7a65284d9f072a41de1f9a3dd4cfc4c59ba533acdbd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:11:58Z), 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/DEHC70112901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e518241497c750205526e347ff994058e093fde38deaba861eca6371566121. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEHC70216004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ed4e4baf3630e0afc1a842648aead6c2d148d7b91dd0afde816c5219d2cb9d. 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/DEHC70216008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae905f5bea95aa7807f0efc81e52507c734c67701ddaa8682a772b7cc334d058. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEHC70316802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17a8dd6978c45a3ca057f18e5e8a3714cd6ba8c3c31a835c0f2d4b514cc6201. 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/DEDE30802401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cead1429bdacdf535f74691a292a30019eec26941ed971f25c813d5294f07ba. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEDE30802406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce02130852dd27755490c357e6bb5b5c6bf1e85df6b7e42c50722bb09c95de5. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEDE30802407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101baa955352dcaf121fe15067e36b5ac0f10a8e7d2e59718f9931ec8bf7eef6. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:41:34Z), 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/DEDE31188011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7713a2d3c8db98625c460e9a275b932202fe6e8f37b630cb17d60ce7ec78569. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/DEDE31188012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ed3127d58a154634f46ad4e537a1cbb60acdacc1d9e742866438895bbcf4f1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEDE31512202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523b294eb43d82bc55af7d225dbf0b3acb7d2e5de5e10af914b0707d59d3272c. 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/DEDE31512208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332b9e60f0e4d3874d26a5bc137b7f6a2873ffdeef45846412a04c834ed907a7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEZ901601286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd498311065f1184dfad30e0e1a1b416933015bd7fee815cce7047102839d2e7e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEDE32011001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe252913e5a29d88c3a1ef4c337546a79c49d5fa358e95856f29029a54eaba818. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEDE32227811.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3f9ad3b6313dbf24b96e91737b46bb0d677ccddc435fb17e94cd85d395f374. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEVF42202028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb508ddf065fd417380c32c7fc5da845f26fac9456e98ecc7e1d934b021f898. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/DEHC70216002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61abec742f99f38210747bee6bcde616eca3e7288aca0a875ae8cc98924de1e4. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DEHC70216011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bd40c58ef94d5f2134c69a8d4c525f8e6a46a70c654cfbcb4a97efa2d2fae8. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEHC70216013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045013480817dbf83314a1267f035e05d10b1d1b765c778bc7541828647a8418. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEVF42202027.