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 0x82099fe49af59e41364f74ec8bd9e48ac28a2bdd805404069841b6f6cf0aa541. 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/66443301-2a9a-4a3d-a95c-862120e7178b.json and https://artists.proofprofile.net/proofs/artist/66443301-2a9a-4a3d-a95c-862120e7178b.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 0xf2f8242ffa8e3c6201e1847b1f948dab283366474a80c7875468cd3f3f5e5461. 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/BK1P72400120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c46cc4b5615af87a25bd9f7cd678da1e6b3debc5942dd1f077df20aa583eca2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK1P72400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac031a3f1f3d4a39670438afb445dc068563947887dbd2cdf51ae07c612dd32f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BK1P72400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d00f3c08c973c2f9aa2bb3c5c020e3ba2ea804103f77332fb692558de071fd8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BK1P72400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309d9f88c88057467acc80a3bbe2858ca53fd68911c609d487b7c8597eac4418. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK1P72400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6083d54ff9b0a2d55eee7f88fa024c28fd33279c194fe3d837be4b873c8b1d83. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZMZ92462164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bf1a5ab3306d10758b4ec5560496436c93b9eef26bcdd6b6e4f1d603507e6c. 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/BKELR2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057bc1580013a0a2b8fbd5e634e0eb0f1249769de5290fb7c7d78907e6b75070. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKELR2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328d5411e8cf44b4d55ee04d36ee8357ee16ea7ecd8e00e6eecabbf86b5e6fbb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BKSAI2400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576df606ddf63f818579d92048d1d4dd675224854d36df4ad0e1e98d51c74e6d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BKSAI2400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da49e9cd855b84d38f99733e20915684e048f886fd4bcc27fcff5d278e48404. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKSAI2400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7171670b3316fcb1d1868d31c90c6b3d0e8ae22c2d42ca12a623d18b0c017d41. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BKSAI2400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d705339ac309e5c98ff2f767194b2694bc7a841e064ebd892899bb7fad26b0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKSAI2400157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43de0c5a69328d2488959aa3168fc22aab31eaadc307a550bf7efd053c6d70ab. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BKSAI2400166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae66ed83b99444445bbc81d3f8b80aa8ea70313294659890bbb7a47326e2cf7a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLM2525071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4473e3e4da710f33030570ae786b01888d4dd3d00609a119ef1dd578b9326f. 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/QZGLM2525072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4592e0640e051ce2df308514fb920cccabde348fc6563d348444708a84ce93. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLM2525073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b94c12a13ef2b91a6b71c650cb148127c077233f585e25f2195d5adb6fa11e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZGLM2525074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486b3c57401cefc767c767475dca3e911aeef7ac70755beceda79a3b481d32c9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLM2525075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61b914db938b612fff5159d20461129271a6e8bfab2424378cbc7a0cf56a355. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLM2525076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a0f1f5466c26ae2c17f85adba4eec0a44925d6b5b929ae667ea864d462ba53. 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/QZGLM2525077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960625904ab3131b99d111a5d57a22ed3c57729e51dab9108784ee8b76e1c3c9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLM2525078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b86788114bd65fee8bdd8e78d7ed8f68e1b7b285682389fad85afb52f0e61e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLM2525079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae220e452f993d93f6790097cf0aa204ce81e2a48a7e3b45180d309adb37303a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLM2525080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1a11a3471d392958ecb13152073da4896e41a70b1a538d825fbde8650e040a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZGLM2525081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f800647426f3cb27c747d09d44f590ddfd9635c8b948d1978c6ccc512baf53c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKTKU2500088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaffae626a7ae7bb7a20843c8c5d7b4d7c3441f83ea31e400a8fd6f63f1a9227. 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/BKTKU2500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3569d4c287f8b80f236e0eae93310ef70f225259241b0efced93369e7bdaf14f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRTRB2501104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b06eb4413cc9f04ded46cab1dd55dc2bbfe256550d9a989da2cd280d65c5235. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BK1P72400179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bf1a5ab3306d10758b4ec5560496436c93b9eef26bcdd6b6e4f1d603507e6c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BKELR2400002.