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 0xfb739e934bb0427bbb3d226d88a6123e1863f4b0414e5f23675a54ddd6d2522e. 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/4eebf96b-ae17-46f8-9e65-43ef4b2485a5.json and https://artists.proofprofile.net/proofs/artist/4eebf96b-ae17-46f8-9e65-43ef4b2485a5.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 0x9146b5b382ab7bcdb92af32cf145d6d67b38303c4b67209f109012efd227e14b. 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/SMRUS0065155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6cb00d7aa7c1682a9a08d9c62686619d68b603effbc36d9d9eebd55f7a5658. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SMRUS0065996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244d0be5229027e9607f6c9b6be8a154fd2d3730a0ee1717dcd5e8d9d35741e2. 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/SMRUS0067087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b55ce555a895f4575ea263496070b9fb0e7d70fd8a2a5b5528a4c63d770e3f5. 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/SMRUS0068666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1b15524ab84f5b73820df3a8ea8d2b35d5ed1f51d261d9864f27a323450aba. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/SMRUS0069773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3488481cf7f8ac8c584ff645bd4dea787fbb21a11c7083063e2fba4a19b753f5. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/SMRUS0070117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3de48d1923b747fe339e383e58d4b35eeec091c458f376a7bc4f1009615364. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SMRUS0070783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f51337f234a281bbd2c4d02344b49989c81dac6e2b0dec159e977355dc2962. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:34:58Z), 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/QZNJV2215015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d179d4eb204e2f1c4f104b8827433090852ed92971f7df5ae08d916347599a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/RUB422301882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097500f3266f99b7bf2cb97748ba44abf0a2cceaeed6d9160d9c5b607432f9c5. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/RUB422302851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261b246ae1580b052f7c2086ff5e5b75407a4076e99c85314c4389ffdc27fc2b. 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/RUB422303294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099d654b098dafa906b2c959b76f846808bfb81aee5a6f096e7c9c0b83e6ffa9. 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/RUB422401553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32387be51c04a17eac862eadb64455d5a037de5bd6f3c9654281090298d44224. 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/RUB422402875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1f72c47bac27e59e0ff1799a7fbd2786882ca8e94ced3d7e3d0a1874a6a097. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/RUB422402876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9242176e1d73fd08d19c31e58a384fee9294d4736b4ac87e07bca73eac1c636. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:09:36Z), 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/RUB422402877.