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 0x395e6608bafe745df8e6c2f8750cfa5b3b9629914bd3c0a088ffe56f9d41c5e2. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/544c3e9f-ec5c-480b-a789-dfd668c205e8.json and https://artists.proofprofile.net/proofs/artist/544c3e9f-ec5c-480b-a789-dfd668c205e8.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 0x05ddbd758dda496e8fd42415cd92747feb1ae3b835c83cd4988174ed0e85be58. 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/DE1AH2385902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2699509cc6a681b3c16e42392c6c4a59b2520f94dc42e596d227f0fb9ad02537. 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/DE1AH2385903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960d60e21fa6cbe74f1b8592bbbf733cd5ab9473ad96d46cf792902977bf7d1c. 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/DE1AH2385904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cfacee0ebea6ff98bb0ca9494e374c83d15c9d922452ab2a101ac232053c3a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DE1AH2385905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7095031ee0d3844bbd48d1e3fa88fb4778615e4f2ec1b15c38aca2da5f3af652. 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/DE1AH2385906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0521f67a9d10764d0cfb590da0e2813dbf8407e62d5130c4290aa9ff604759b. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/DEZ901800163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefcdde62ea5f81a0be3b2e671cceecc20f3b96967887a16216a6f5363ab26559. 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/DEZ901800164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f0dadcc20b502ed64f575fb2215cc52ceaa4053892d9a5295c219a3d291c97. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:02:55Z), 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/DEZ901800165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2b0257b6e265635e59b703ba8078575022616e5baa22b9052684980cb7bfac. 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/DEZ901800166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5604edf99d88272add083e7dc2a4e4805bf74002a1e2aaf7271c5c66f83de981. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:02:27Z), 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/DEZ901800169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274534eb69739ca8286d17c2907550477024a50d638068edfbbc45a6b22ca46a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEZ901800170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e11414a6b967a56fcdda9406bd8ba7fef39e1b0757b624fabd6cc4b4f60174. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEZ901800171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103c5299d52cc46cede90274287424e0cb591cd26c9147e071283b0f06615cf7. 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/FIVRI1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1feb4220efbfc966a8fd801754af83c40c878bb204383a818e3ac081b0bd4df7. 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/FIVRI1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ab14891826c95dd373085895e4092b7eae9a044dd04a7d74dcb0cc7fdb4295. 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/FIVRI1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ac9562f4eae93137bf337d3a624c3a84ac32e1ce4c6b945ba00fe651210f5d. 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/FIVRI1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72d98ec5188850aa91cc18339b8d556be949e06a5204c95aa9939c0ef480363. 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/FIVRI1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1896e526a2f325c867f7bf7559c83e49799ba5998613fe3689fa19ee5732a327. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FIVRI1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecde18c05c25e0b64d6710607867ef2bb572cadef80579d49739b425b9906858. 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/FIVRI1500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56dca7b0a9f8f5c7c950d1d1a5ceb1e3c2162854bbab333142952d6d74d3edea. 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/DE1K12410501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7095031ee0d3844bbd48d1e3fa88fb4778615e4f2ec1b15c38aca2da5f3af652. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DE1AH2385906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ddbd758dda496e8fd42415cd92747feb1ae3b835c83cd4988174ed0e85be58. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/DE1AH2385902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f77ec19dfbb417a2f1876837aa4be46062aa9fb2c3519d6640ce09004f21d9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEYOK1533321.