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 0x87e2eec4d6fa0624295099bb1ac67301b1c77648d06a9c71b1867d0f9e5e929c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca633360-ab2c-4bea-8317-bfc254b4a91e.json and https://artists.proofprofile.net/proofs/artist/ca633360-ab2c-4bea-8317-bfc254b4a91e.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 0xda49e7bb1914ef5b873fa10752b5e80dea0ec5d08c072b8ec0f38f39ca05a59a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:13:50Z), 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/JPR502034673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772ee9ef104e4fcfccc14d3f17c61b77adcef1eadfd842cac5ccc04e3ca136c8. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:51:28Z), 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/JPR502034676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef1027576212d5ad88cef7a367b1f2f469a2bf30eaa94ef4e34c36cfdef5bc0. 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/JPR502034677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda4fd7823225477db3c96451b77bc24187c156b2d4cb0d9d7bfdf96af705962. 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/JPR502034678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7371d98d9befc7b126a57d1359ade7e129d2575d5047d882e317c28b8701a1. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/JPR502034679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06596862618e949e7a1a68fe0cf8169ecbf8814ebe25190e4c047e739f2685b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPR502034680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8979addd8bcd431a430d362920316e85903ef0e6f51c58c587a0db6d654c9d9e. 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/JPR502034681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb93a5be15c5fdafea1dfa43590d3a39c4d7db25d69417ef234946df3121e2ba. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPR502034672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772ee9ef104e4fcfccc14d3f17c61b77adcef1eadfd842cac5ccc04e3ca136c8. 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/JPR502034676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06596862618e949e7a1a68fe0cf8169ecbf8814ebe25190e4c047e739f2685b. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:08:41Z), 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/JPR502034680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8979addd8bcd431a430d362920316e85903ef0e6f51c58c587a0db6d654c9d9e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPR502034681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b89658a5e4ecf6dca67179f4640dad0b656da8a7e5da1e6fe8a2c0e55918ee4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPPO02101118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10947b810b1ba81612d297358ac06e797d59ae8a46ce99c2dc8882d866299de. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPPO02102046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1dd45b6794560d1f85167cb7d2ff34852d42c1354389ef77e9255eea93c4f83. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/JPPO02104578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0832794f568cecd72a0684742cd9b660446afd85c42c10bc72ce5b226667c9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPPO02204003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff42e6af3f25d4e6ea232a2b78dc06215d80cb90b125a3c45ff80d47ebe125f. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JPPO02204238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10947b810b1ba81612d297358ac06e797d59ae8a46ce99c2dc8882d866299de. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPPO02102046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4c9f8a282ac5274bf8c348a7bc6fbdff8f730f98cf531879b1433281737b02. 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/JPPO02204684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0246d906e6616329ffc3c2fd2d70796ebc63733361faab70e979e83a105ebbd9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPPO02204686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaebc7ba4628b138fbead46cf7c8514e9faff853337966309df0d3292432fde6. 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/JPPO02104356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a0fa7762ebcd21ee53f03c17e09e7bde1449aafa8d60ef528e48fe4b30b6c7. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPPO02204687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edef0ca5efd03e85fae2cd51962e220aac77eb1d038e2a8e23d144272ca33d7. 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/JPPO02204689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3e9b6557c12dd5d93bdeb741a0099183596863a89abf73b2eb1372eac65db3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPPO02302398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53634cda5bd02ee5846362951dcf9ffc634bee39249028165c71b8eb76dfef3a. 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/JPPO02400678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2406608509f3042228448ae94f634d5c2a2c7a68f4823aa6d4c2869fb5604140. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/JPPO02400677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cb04cebecd5cf0cf865395ac7ad483f6443993d8e16f716dd9f4adb0badc95. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/JPPO02400679.