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 0xa1ba7500c1f17c552fd20b5c94bdfb694871a8ae45f89793ab3da90db31b5d32. 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/481d2738-a469-4749-8ab1-81259190b067.json and https://artists.proofprofile.net/proofs/artist/481d2738-a469-4749-8ab1-81259190b067.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 0x31fd22e78f9a6a3086d69e11c8eb7f7f539949dd95cfcfffc3c3d15aa82c09d7. 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/QZLL92222008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82952020446c22871535b83bcfe326d2e7a8e0b3bf9bb54ff65d7dc6627e023. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZLL92222010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c3c372312b209f61f16299f1356d706ca47c4f34fc319381c58a24c0218fc3. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZLL92222012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d6c8edfac75ff9d410b8ed06b5b31464b5cd2c09be3c2e8dc0675f08ba79a5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:51:03Z), 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/QZLL92222016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78443df613d1950291b6cfc0f1b4b4ec67163d284052ea54bdf1b6f9991a9d3. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZLL92222017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5fca1c03cf926a518a7a67663df2f4a90e3431960439ae8ab799ffdceeff8f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZLL92337593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec92c4d6897634cca0af09f0ff39cfb3ed5a108d03ee12f09e6aa69e5563918. 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/QZLL92337597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ec26100637240a496d577cdd3d3b0f9c0858a2eeecb682c9aa17d2ad1b2e94. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:23:23Z), 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/QZLL92337600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd86c7c99c78637de71ae79f987fc19961b7c682ff2910a43774bf2a376ead71. 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/QZLL92337601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8471fdfd270978c02ad8f3e8fa8439f12b81857b143fa6e13691dc2cf8305a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZLL92337602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2710017f75d0769d3b85b6bba1e71553d86276cc3b67a4b15d714901d8fa2d. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZJG52472737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb541f5fb92fbcd9a58b1b5f175f5ee99520e3b46c8eca7cc1c405bea5dd63d3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZJG52472739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1869cd1f4b200906f1e4d99e61300fd34133222df0a4c4f7d46f48969d3684c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZJG52472740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bfe1bc04f4185749a42fbaf77b417840876297305f3f7b93868667fb14921c. 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/QZJG52472741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0940ca87805081781ba8ab9ec468da8bb10df53c0e161abdc7346e7946e3427. 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/QZJG52472742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37388f9f7584f1f3afe4b19d14842dea174defae06b0fbff7a8bee2611f3b2ea. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZNB82423892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e57658cba582e5ed08a2b570522526271bf4bd41dc3cd7f0a8630e1fb0bbc6. 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/USAT22501007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52b6782c63fd551559d9160e3ee11bb59c98a00a4fe086cc91146d331a6aa16. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:57:01Z), 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/QZNMW2402426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2629fc8642739d8c472abeb16a2cd2fc745214c7ff6f7d0d9920ae983dd7225. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZNMW2402428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0e13b128d85ef20745f48194900a8b345250144d10966595b8781072c44b6e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZNMW2402433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392aafa922f9ee63e19543e5782999c5eb5693d03323d1f1a5b2a43d51a8a0e6. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:54:23Z), 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/QZNMW2402434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5752bc4001a13cdb1df57b057b54ea318ea3c4bdc50d8ec75c9fea1445440387. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZNMW2402436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed07ea9824544750aebee33ee772dcdf59a091e09d045ca56169f33171b5745. 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/QZNMW2402437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1f213299cfa9d79490922a532baed1df164185cc694247e91f77136bbc8fcc. 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/QZNMW2402438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52b6782c63fd551559d9160e3ee11bb59c98a00a4fe086cc91146d331a6aa16. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:06:39Z), 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/QZNMW2402426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2629fc8642739d8c472abeb16a2cd2fc745214c7ff6f7d0d9920ae983dd7225. 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/QZNMW2402428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6a4984a5794d78be43fd6fb7e2d2725917571a1694a9498dabfaf1718853a2. 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/QZNMW2402432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5752bc4001a13cdb1df57b057b54ea318ea3c4bdc50d8ec75c9fea1445440387. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZNMW2402436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1f213299cfa9d79490922a532baed1df164185cc694247e91f77136bbc8fcc. 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/QZNMW2402438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd612a78deb18ba7a6985ca9c7522289bb3230b40cb7f7aea28bad53657721c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USAT22502810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fec8fffe74792ff18a3eb446cfa0b532161e043bc3040b24093c50f4417a64d. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T22:00:08Z), 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/USAT22502812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a94f71ef1e251439b4190f47c7fb0b180c0b45083e80a7a20f013a1f7394b9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USAT22502814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f70a1afa186786a9de076e641243913ba2ba9c4e791cfdc223353d829dc3e2. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USAT22502818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47383e46fa12b6aa810b8226b2cb74ea310fd2868aa0085fb9e4722d73e7afe0. 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/USAT22502822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc69ec859d967dd2d2238155fd050504afe5dc0593e03e5e8b2301addfe1eacc. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:48:20Z), 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/USAT22502824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68c76397cb690f248e8502659f8c11e3f786b705e6e7495ce3362cdebe8b9c8. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USAT22502826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb55906e9ae9a624b820e7688a2448bd90e816fe87d05972017a8222625932d. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/USAT22502828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3803f7031afae91c68f60978d31ff5aee6624bb475f0ccc5d8f7b55a115a479c. 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/USAT22502832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec9c08b5ed1d32883293a121b5502142965bc57dd1d8ca6d23d03695178ad4c. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/USAT22502836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d637b6e5a67b4d129e4472f141598ea2cc2a1c1a61f263e64929a273477eb7e. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/USAT22502838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9626901d713fd65c73c37a5268946dd481dd98c126a2b10ca0f82001effcac5d. 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/USAT22502840.