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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b98ed11fc9fa6e4803211a9e733045f9a7d1a84145d860b8777991ddcf645e. 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/4f740fac-9800-4d86-99dc-be8db1adef5f.json and https://artists.proofprofile.net/proofs/artist/4f740fac-9800-4d86-99dc-be8db1adef5f.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6687e2b02153644c789d5e086ce8cfafec36b124e45c85db15d28cea935abeba. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/SE6A92371018.
Wishing for a star, even more if it's dead
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f80fca4943b7fcf7a54684d7172a14f4668e5854ac27116604c57b38b44a295. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/SE6SA2490050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f80fca4943b7fcf7a54684d7172a14f4668e5854ac27116604c57b38b44a295. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/SE6SA2490050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cac065cd36786eb3c7d3177959891e1c47a27d3fc0ec7388435f561e1ac4ba7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/SE6XW2542914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd965ab5c9b55b03fb00122e1fa18908881082f9c5529f807b4369d2dfeb95d6. 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/QZNMV2527755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff36852d82ba3fd1a2e3ace599305ac55ee62abc7acc7e97898d61608ef2464c. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/SE6SA2533716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e1e994e5d102afe63879d58f66e7af1b58258ce588329354946cb5ecfe2769. 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/QZFYX2465316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1dc6507b88bb6b09665b508f08776f1489446d7bee2921bd598aa3f26a3e3c5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE6HN2489475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa703b6b91739592bf241be2c4cb1c987e94e4d529998bd251b340e49eb2d3bda. 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/SE6HN2489476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fbb64955b0f819f76cba0f61a4241326b14b8a2d35dc64eb6bbad7eaa2cbf9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKZGC2502049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c00cf8376b2a9d2f49804339cc7368c110271c7cb05bd0c11c045165fbf4aa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKZGC2501521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf7915e6edb6a591261da17a996914f60c8064389192c3cb9a17ca4c8e29b01. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/UKZGC2411463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6abcf1ae99bd7ae239e566c7ff0224450a0007dca8caea8fd37e9d68488f38a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZJ842004445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a09d081993ded358795a4d2b592b97be57bfb75c61abc9887c6ad047b54306. 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/QZJ842004446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2c29552cc91a6929de64b074b538b881984de9b2890536dd3ce5a86a2dd525. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZJ842004447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617fcc26793601f34b4ccfd0f45bd377951b384aef1f245063af892d6872570a. 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/SE6QE2347313.