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 0x2a626461c2a70191def3a704e2381e86594c5bcd86db17abf18b64c85ab8c2ef. 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/38a01633-334a-4c87-9e65-0629d847d9bb.json and https://artists.proofprofile.net/proofs/artist/38a01633-334a-4c87-9e65-0629d847d9bb.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 0x6311fba92015443675ffa8161cb727360658c8954309efc0da44c74d55e9d0e2. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZWFG2306579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59198463fbcd498f7b6f7f246431ca3461f289daa4f9c95b2bf4111b74d833a8. 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/QZHN82446031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fcc2b798549b0e9a43fc83fa39cc2e89356a0e6d9d8102b1ea5ff471c3058c. 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/QZHNB2459914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bec8f22aa6ed7e08f9493df18cf3bb546f650b1136e2aae6e0f1d3fb56fa1e5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:55:24Z), 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/QZNWQ2442854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c321fad6c386e4ab16fb7f0c4ac43514b31703ab8f34dcba2b9817c66ee288. 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/QZTB32475548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372c44068969e0d4415eec89a8251e2f039e6a9bf86bdc264aa9345a9410b568. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:30:20Z), 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/QZTBF2424647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378ec89d1b57a6dfe6a6a56ea3d3618e675ce26c3cb8e196d3a0d7ad037d9c7a. 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/QZWFW2433846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf89eb6f76a7e27743dc450d86da4532b61aeccde1e1e7e0d1d1f1a72ce4520c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T14:07:56Z), 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/QZZ7N2404214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107e32eda9d61da5ed1e488f5885cc87027b13b6558501d99eb24701dfa8e1c5. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZZ7V2459595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb4fa4d0e10888f7a37d7f303e34f1297ade89b415bc5ca1a5e4824194da444. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZFZ32588311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f168d841f10874a6443d568653fce5c802a9701391d2783b901cf01bd20bbb. 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/QZDA72513175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f30bddc95adaeba4b8f47fc66708fda2d16bbe9cb1c933eb031e3124f54dd2. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZHN92529828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f36af9cd9a6315b9436cefc89dafc6fe61590782671c32905ee78e4c295b9b. 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/QZTAS2516013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc94a80722bd0113ead83611ae7c62811833b9bf6b0da86770b321e3c48ec941. 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/QZTBF2518051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522e5c05c7197e4fbda5176c255c114877955894d7119c79cda57e0f6ea15abd. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:44:38Z), 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/QZZ7W2508214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22076f4831c7a323a1b5d19aaa2818949423354a4de4d768284b5ddacaa6ca4f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QT3FE2564162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f22ce2bb8732cad4c7a57884415f25084ec406ef5b9164c8e1fa6ae4cc80f0. 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/QT3FF2538646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369fd2cd693758980718e5fee46b83e900a5a3892eaf99f411ac3cfe4ec6feb1. 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/QZDA62491485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4bca10c9f3257d2bf2b49dc9fa5f931d235a0f634987ba21174b33b23bec69. 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/QZTBF2336909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f4c02378f850c257d76dce0aabab043fb1e2d220c5b51c09b722a8794e2c25. 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/QZTB42392248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d30135a362d9fba7f9d83eb1fd67b4e6a6471a78962fa8a56cb6421ddfc5a3. 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/QZPLS2393466.