1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x8b24c5ca2ec605ce5e922e02cba784a79d037383f1295d3f50a2418091f9acb8. 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/48776de9-0d2c-496d-8470-e4d5ded35e65.json and https://artists.proofprofile.net/proofs/artist/48776de9-0d2c-496d-8470-e4d5ded35e65.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 → block OTSBitcoinBlock must exist at that height 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 0x3922a96a917c0e7db610509de71f61a0d190c28acf2c2377b6c333069bd9473a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:50:38Z), 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/QZDA82431075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0a7e3dc7a72c10c4b06855bc54282de178bc4a1b60116df8fa62b72de0bf4b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTB32444588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3546f2d8c3bf60bebfd959dbc6f4a8cd31f386a4f82f1f9e7b4c2857138a0fb. 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/QZTBF2431681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b634126ca0a5d1cba6ac71d8acc0820a50dd885e78b7c7802b7aebe8c334803. 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/QZWFJ2470478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafedf3b5a680a928dbc9b9153b39bce88af8627fd2f2e6903de73c23934acc50. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:26:20Z), 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/QZWFJ2470483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc0ee713d9f2ce5bfa199fc92191c1538e5ff359744c9525854852e5915cd8d. 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/QT3EY2451038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7e75d22c776a3a9ba2e565d6ccde51e434811422e897d829fa21f27829a4ed. 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/QT3EY2451044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803fcee28abbc89b0c23c6ef7c76269709a485bf987d5bef54e940b4fceaaa69. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:49:49Z), 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/QZHN72551343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8a03cdc7be607f1e001ba1b8799056ff25ef99f2094b43006daf87258a5345. 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/QZHN72551344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582e0002c9ad6a865577e4237280ae2b8441f2c88d5edc9432ba1ba54ab0bd60. 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/QZHN72551347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c11d04ac142cfba003355bb8e3651d1392edcab39ffe026e3ed987c3b5a4ca. 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/QZHN72551348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ceb1f5b839898569b854ed4c497b8655979f371fb5b23d36389456f84ed14b3. 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/QZHN72551349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fc8fa3cbc03e4f9660b4c2fbddd01902d45421c0b17772df9d7fe47d472178. 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/QZNWY2578158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42954ea062997f57c13bf6089c26028706eb1496ad86d9dfc2f7c4cbbf8f3a57. 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/QZTB32540843.