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 0xbed1b01e4524f542fa9ceda6499f4f098a926b897dca510af7ccaadba4a6117c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e47d1051-0b27-46cd-bbd3-06477413bcaa.json and https://artists.proofprofile.net/proofs/artist/e47d1051-0b27-46cd-bbd3-06477413bcaa.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 0x5e32de7977a1630821ca2664740a18780a6fa70e7af212136bfbe956d54fe9f7. 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/FR9W12236076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38e0713b8289a34decd4688294c495b4b9b230afcac90f4b84ce3724b7ee18d. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/FR9W12317720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923cf34dba6fe650181ef56bf8a54197bbf87513c6b2575c928d65ea005ac5f5. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/FR9W12317721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c839c59ade9c00228f7796be495db657c290af4e3b06dde7983e62079fdb58. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR9W12317722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab54cfd64eece11a11480b20517c4c65143defaaebc46697895984862044c473. 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/FR9W12317723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f573e7a202415a20f4856e465303734a1fb7650897fcbe3624092ed697adafc. 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/NL8RL2304109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b35a6a9728402a8d7676358c6bab0dc362613f1de6bed43f69bb6f0ef8f4a4. 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/FR9W12337862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1cd28f62d2c2e5c57546985d563f925965beb1d54035a472445fb61c61fcfd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRIDO2411103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d81534b973ed2fef9aba923cc84c5244fe11dbfffd2748348a90a3e565d6c6d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:46:26Z), 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/FR9W12423396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee915563ce8cc26a6b926c3260f21d8b48791dcdfd6ebda7ca45b78c573d47b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR9W12423397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b97a0114fb26596c6b2a7b7c462c1047a33406b486a6bd59ac229408643aad. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/FRIDO2412020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b35a6a9728402a8d7676358c6bab0dc362613f1de6bed43f69bb6f0ef8f4a4. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/FR9W12337862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9148ff6aa6b94d3f81c5be18a1e62e564e5fd33f887f78e7afe8832a766820c7. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FR9W12423400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2e3ecaa6d3b3584d19d086c963dca067001c9461d22e419a5d741f77aaef32. 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/FR9W12423395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7897264a8c2ae3670c3cdcc0ab827f47c178b1fadb0850be170e60c75ffe1d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR9W12423402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c81d94139aa78f23324f059a9bab42a8053782b7090d8692c24c0756298a0c7. 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/FR9W12423403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f573e7a202415a20f4856e465303734a1fb7650897fcbe3624092ed697adafc. 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/NL8RL2304109.