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 0x1ce1b3f0917d8e62ef2cca073402e3268e66ff1ceac287b51eaa4759ccf31653. 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/54b60860-2200-4099-bd43-33bef6df6c59.json and https://artists.proofprofile.net/proofs/artist/54b60860-2200-4099-bd43-33bef6df6c59.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 0x08dde86a58a217deb4f9372e564e63edd4aefa3b0026805b5df1913affa46286. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:49:31Z), 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/QMDA61364138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e1f55f67fcd1c7e0f9aebaa0e4e270682b329bc03f7e6e31135495a3ac8ff7. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QMDA61364139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a39dd09f0c0372ace9ea81e1b2bb899a7df4cedbed4e5736efae7f9194b6c5d. 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/QMDA61364143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb41cde61830908d9952bb7620ce82b6af3bb4b4e06e0cecbc939a20c7395b0d. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:34:30Z), 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/QMDA61364144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d44f408ba8843646f077039b2e2be226baad4ebe0237b0d05ca6257b978b98. 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/QMDA61364147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a942cd2d29f95ef2d60f1aad69d93afddd84814d79f9a200ce303a602576ee. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QMDA61364148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d2dac95bec19d3bae6f57bc01770fd319649dc2a8bc995377a3b43465fb3a9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRX872024395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9f1ad73a5b137f08f32d59ae6e5348291c94bf4dc8b2e6a9196dce26f4bc71. 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/FRX872024399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98561e5c200fdd5ba60bef4f2ec4d52f4b85e769352655e0cd28b1e5e46e8fe7. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FRX872024403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4c8d2731efbb8b099654c2214eb8767c5d7e195682aa69d5c0a4f48b0455d2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FRX872024407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6f536c75a0dcfe44885a8e2c0655107b025cdc6aaf70d3be695862f01ba44a. 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/FRX872024411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1007898fb8b2c327159b04f64d62acf27955435723a87f591a2e8241b21b17ac. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:03:57Z), 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/FRX281993485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de9079896b9feab2331456edccffabc9aa6902c9dcf0a4f973a3e83c9ecfa38. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/FRX281993490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee1a7f6629e4df9c16bcd3860214842e1e9893b71ba3f14e486a8cfc561746c. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FRX281993488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c7ff4fea21708216f9f47bf5b5c52cbdb877a41b47429b9ebe28d925145fc8. 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/FRX281993493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0a70e7aca7f27d15fe6bc17dac224d57b0f4b36dbdb22647372ffd0be65b33. 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/FRX872020960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177d48ae819f4d566271aee4fba31b9019d072866e996ed0cbe418c9b5434929. 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/FR96X2108621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618e56a5a39700fbe58ad6e1e305e10b5c03f55967b0adb6be822252883ba63b. 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/FR96X2108622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb003f1bed8bc3913737faab414b3f44eabcfcfd53bd51e4968547f78b960593c. 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/FR96X2108625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9215a5816e9bf0c66611803f66571f2c6ec397126fedcbe9c12dd703c4b22fb. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR96X2108629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350fe5734e218768b18faebeb3482651b6536f41021a3f12cc9ef282c078f423. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR96X2108620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e220b225aceea24cc4467ab337a42d67a3d26352e6c215347401d72d41c1e86. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/FR96X2108628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f98fc627ba2a7f8cf38a59bf0bbaf680dac29707721547bb8e1320e0c93455. 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/DGA0P2328284.