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 0xeafee51909ed52f6afc845cdfbb53326a07f941883cd2ff9c68c1e4c833107c8. 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/d5721c38-ee58-4c15-b990-661bbd34401d.json and https://artists.proofprofile.net/proofs/artist/d5721c38-ee58-4c15-b990-661bbd34401d.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 0xbf440e0473b6e35ef5864890260b53e7c122f17384a20e5f093779da4855f9bc. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ZA56E1700412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f1767518d5c0efc76f3a10ec2991402ad3d7461304bcd057faa8aa50a9dcfe. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ZA56E1700413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1210428385986a6932bcd6b9ae7958f7e9e97bb902c50079ba6f1131db84f356. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ZA56E1700414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35895b55279b3f05337402dc920391317c017f71e62eca28a6ea28266f329d9. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:09:18Z), 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/ZA56E1700415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3f3cfa40b6e69668292dcb1bac5cbfc5a738db2ca638968056071ba38b298d. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ZA56E1700416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdda0856bce8afc60296084662718aece2cbceb1a787e8ceee0b6dde0cb04248. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ZA56E1700417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2834ecd27e63a2404f2a3c9758c996c105e235ec5055a74094d74667a19da664. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:43:49Z), 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/ZA56E1700418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea8db57d3328ba7cc50ef94696848cf7e29cb43260de856712e99c80c0da951. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ZA56E1700419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f56aa8d6e370ba859523f86136332e2ad9f7d09524ec9b538213af30ceb74e8. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ZA56E1700420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02990d0bc4fd5d7c8951ba8c6d91615ebcbaa6b2b8dc45d132b808309621d9a9. 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/ZA56E1700421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875bed55b153afb2007ed60d4fb89f3ac8986b19c999c45c692cf2ac74ea1301. 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/ZA56E1700422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c120e0154a70e42739a3d623038bcd4ad29563c3b1460756465bbe8464b769. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/TCAFJ2186872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1897f13c4d7a53c9622398ba4da4f0ab71c867fdb00e8050f5c7cc3555c8e6ae. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:48:09Z), 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/TCAFJ2186881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007deac5e0c2f25695c61a391ba1f7135aa83dbb608b24f4db2fbc65458be631. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:59:27Z), 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/TCAFJ2186889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1971a28c580cfa44cda5e7069c28a18683d8b4e043449c19757c8a9f304cc3. 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/TCAFJ2186910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a24f95a3137a9a82f7c1cea450c263a1649bd1a25f0a65fa51cc1c7c58aab4c. 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/TCAFJ2186914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1122c03a9edd4322a1a798e77fb56e89f60019068cf2f6a8e55b23db6b2027. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/TCAFJ2186917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2036b4cc0e58c35b01e705ef047b981fc9d327ba94a00ff4285104c20fab4101. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCAFJ2186922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dde88ae079e958c0c3aedd63ec94eee0cb1089c44ea3c3ce679a122cdaf870. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/TCAFJ2186927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7351cca7eb6f3d7a88890ed20e7fbf8d48cefddff21a3447e40dcc6cdfddaf6b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAFJ2186930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca6b8609a67165e07ab0c828763ce94d0c522fbc8a383586ec173c2a368738d. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/TCAFJ2186932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748d0fed383db4a3d4e75bea5710a71e1112f4d465fe01fa9efce43d7fd8f4eb. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GBLFP2372794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84814d2b29e4ac8e84689719dddd69cbfec101e82149f70093b89f4cbaea5bb. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/UKXN22336264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d830265c3183264b0b2c55e47ded43176ef33c500dfc10ea728ba74b38f66bb. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/UKXN22339451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6590aecdc5ce744273339f566a99e5c92364f3e32770549bdd9470b8c606dbcf. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:00:33Z), 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/UKXN22339503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df0f598cc1a79ab4b67f508b0581a9c2a6a9c1d5f00bfbb32a71f392a2a4ebe. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBMA22305840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79900680490925019dd3e359b1a65131649725414574d7b6c34c3b4136f22d4b. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:33:40Z), 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/GBMA22305841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffa5759746c85a130c625646fd25fe6aa169339b085c89757828a3f1becbc29. 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/GBMA22467878.