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 0xe1d784b9c17a5cd7f1f49f65c8c4184793d64e31ba3f79e0681b460345739d96. 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/24baa9cd-1889-404a-bb91-f473d5bdee4d.json and https://artists.proofprofile.net/proofs/artist/24baa9cd-1889-404a-bb91-f473d5bdee4d.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 0x4f2a8f83e00e1d81013ffbf3385d437f5776586839ce2693d0278cc58a3f7c72. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:47:01Z), 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/QM6N41400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a347150ec7cb9a5d02361df4a4c1666fea64f16dd9f5b39a86a37ba4fb8230c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:16:31Z), 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/QM6N41400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8cf95f9bb807c085a3fc78a2a0d51c1145e120177d092707daf1bb3088abdc. 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/QM6N41400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e9f0647a3f9ec59f499d972838502b52c8bb728dc955e16eb9af233e00a721. 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/QM24S1704283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fd3ce3f14b4f032bb09a368d94a9aebdd560e81f135345bc1070f4922c9603. 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/TCACH1551350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28797dc68377c0fd0bfe978e2d0f2cbf161d7d9e04fd0e9aa12990e840fa364. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZ4JJ1921129.
Everybody Here Wants You (Live from Spooked Horse Ranch)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f95a3efa3647805ad05ea7e872d0f8474789c95297defd552a0f058f3fa5437. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZZ762489200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afdfb895ff1e93075216b7c77323739b2a71cf2fc00bd87ed4ee2e0dc21068f. 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/USLD91780507.