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 0xdf0d77d8e9f0814fb9233b9889351c400cc5d77dc9ef0051b03f254f5307cfcf. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a94e01fe-1a1c-4975-a1a6-f5583a76c6b7.json and https://artists.proofprofile.net/proofs/artist/a94e01fe-1a1c-4975-a1a6-f5583a76c6b7.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 0x32d2568ab5e54938cbba675cf400d83f1f0dd6859f492871551a432dd1d37d79. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM4DW1631488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5552f63d6122a2aedd3dce49b3c4201b1134783a6632eb88bab459d7ad397a5. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QM4DW1631489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc63eea55c0a6eda6d985ed549c86f6f59dad81e75026c718ae8187d4559b7d. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:04:52Z), 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/QM4DW1631491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b4b4d6abef5fd6d365b13be28ef2ce52199772c9919c36febc9d07dbb605a4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM4DW1631492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb270ca5a5fde79b1a5603a7f093593365b9d25d91dcb2c335be205d48c7737da. 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/QM4DW1631494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03938469d64c1feca4e7055a324aedf32fd21e1238f52e6874d6de91dcf128a. 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/QM4DW1631495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37807b8988ecf55ddf2c2002f986041de396a77f8592ae11df4dda6000579a0e. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QM4DW1600849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f25132a34997c2c319f4379307ff76cbe516b01ed630e146e882805d414f06. 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/QM4DW1600851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95cd8be521491c82725a247d055b86bd915e8acd2c9db9dd6be32940c69a70b. 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/QM4DW1600852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa627d544008aad5296186636ba5150c618a33447a611559857e04bd71f688c7b. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QM4DW1600853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290e3c88b31e3a5cd8204c5b3b2458705db5a7cf2b0bbcfc0dfb44a0b72839f7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM4DW1600854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ae3cac8d3394a6cbbd0bef19ddb2fe2b53472e7360ac7b60c0af62d0e3ad5e. 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/QM4DW1600855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea6831e368bd0efe76517bdcc52b5b4820e4ab3bbd070c26f60b50e55896d6e. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QM4DW1600856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c8b27be13445503ff177559228d4888ef7eea23d37d0d7fbf48b2c8a4a6e83. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:10:17Z), 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/QM4DW1600857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7221cb40452c2318b9189e35286119e5395e548e64d3badde50b31788cc09971. 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/QM4DW1631410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4c26863a4e72c2f93c444a1361847b6129c2199092dd16b74d00f7f5c7bc9e. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:28:56Z), 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/QM4DW1631413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235852425dde7d144b18a5caec5fd9757b9d113f8d8e60b0d0202640ec236482. 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/QM4DW1631414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d76d08be074cc4c1bc90b49aafd1ff629072e981f752f1b88a2bf2035da606. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM4DW1631417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e52aef34d6e5d8a7505314fca64b0f6d23f52871ebec2fb0d85901cf6fea39. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QM4DW1631418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd4a2051922d4de3f2c1842a749559d30a6b8952402626ccca896ba36bdbeaa. 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/QM4DW1631419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073eee5be892d5edf8df6be032e5b1e0661fffebdcaa1f0a65f888aaa164b67f. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QM4DW1631476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c9b87b53bbefa13c3e002da6bbcbb8f4b5703a7a02d08dcf175b719fdd2df3. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:18:43Z), 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/QM4DW1631477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bf6e0029ef9dfcc9d99d8ea2b8687b1c2c2846456832f9f871be87fb7c3ecd. 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/QM4DW1631479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78154585cce9d9dc09aab5a7471820381917f5e8556368476b2eb54490504558. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM4DW1631480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd801c40291e2cecaf066c28c7ca6f24e31c4baafd89c7db657dc4952f2eeda6c. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QM4DW1631481.