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 0x688e2b4eaf793dcab1d7469f9ad62994802f33ddcc546d8d6b41f9d4dfcf3513. 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/612d4ce0-acbb-4351-accd-36870f1e058f.json and https://artists.proofprofile.net/proofs/artist/612d4ce0-acbb-4351-accd-36870f1e058f.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 0x7c048b54052979820f3b6e382a457e0d88dc24ffa5201a80c53f4c14b6ca0a28. 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/SE5Q51826998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f3a6a46d0a91bc12fc6e252c4c8fcae53453ac2f2c94cde008611febd32c48. 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/SE5Q51819609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4538422a9b4ae74c11e1053bba23a06960a1dbc2d39d3e334884e2715bc5fe7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE5Q51806934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfb0e79543e80c082803c41a6b30978985a29b3228961cfbf7be9a025a61597. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/SE5Q51814655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a78170e4c5f451590a22a7027d562173784ee03dc0bf8415ddf635c9cdf5285. 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/SE5Q51802919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b58d7000b31fcb6d2b4d06b848ad3205ded38a582cee9beecbd32ff58d64a1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE5Q51817065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c4860bdbf03bb4c1968bef70bb52dd3ab3699817c9fb97ef847145fb262239. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE5Q51803462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0053c6f9d6adad3383c9c760f32817019930a2b05a106c2605d094177c71ad8. 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/SE5Q51807644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1bd99341ef08a7f51df252722ce2e9145bd53d37f2a50de53181055833666b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/SE5Q51818227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0862aaa5344928faf94f18352dce730ce7e4d2c2b8566b7e85e67ec56e98b4. 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/SE5Q51809505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6a82dcabcbf6c0a61ea53112fd267dbe5592767283017a40efaf5e4b8e2968. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/SE5Q51901223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6332749c0596b5e6b8e4db47cf854eb564c10487cf8153dfc44cef92f68b163. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/SE5Q51901225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1d043e76d2938fbff83a01c4c12760bdfaf52874dc79345dbeeb0555b38e0b. 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/SE5Q51901191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab20e542b7d19ecb66c39c197ca71ffc38ee13a6d4124d752818e814042cacd. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/SE5Q51903450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9da64cbe099ae8a5385d8383edb1b71175969e89cb133edc434178436a8f44. 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/SE5Q51903394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bb62f40598b6c82fbbc91bf0219e6a0837ab6a4f524fa128a9f1012b441394. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:33:40Z), 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/SE5Q51903384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6739add3b21076e11943da6ea220cf2d2622ac6bd233da10d82b0bf6e30fbce5. 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/SE5Q51903665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a88d4c1e0c92b402d5ac48bc8ce13fd5a9555cb808f978cb583ed7ab5f03e2. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/SE5Q52104274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa65e8b457241a418bce994cdf11a173230150c4a22cc58354f97f20435a9cc. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/SE5Q52404252.