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 0xbb41206b0e421fea6103eb3a167ebd758ae83b3db2eb352a95e4e77dfb23d786. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/742cea6f-f025-4719-a370-11972c7b8a08.json and https://artists.proofprofile.net/proofs/artist/742cea6f-f025-4719-a370-11972c7b8a08.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 0x54ee8004fa09489f11606bdb3288f953b4f0c4dba0d8dfa9c7ef4bcb16445b96. 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/GBKQU2366779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb279fe4264cbfbd676099d51149e8acb233c03e889bac4e2237037d6dfc45f83. 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/GBKQU2367524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52b8deb74b1595c4e6d2e9ae24fc5e96b68a8966b44519c55bb562d2b7b2616. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/CA5KR2434096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf881791a8b3685c4934d08f1d1c87d143b6815a1ca99d67ef3f383adbe193b1. 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/CA5KR2434097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0948ef17070dc735d5493f8ebaa343b8c68d9fcf236ab97e17bb4adfd4ed6be. 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/GBLV62414104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae79553859b2ffb5dff59da67e7c2d922d91036476b3b6b681211ddfc9270de6. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBKQU2564320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c76766f0d36dd2161254cfcbb21269710436a02395758f00fd4f894c0f82ecd. 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/CA5KR2387718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fd481adc1a3c9a1469f2750b8ec1d2dec0320fd8a0370aa96c6cbaa8196da7. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/GBLV62316704.
Super High - Corresponsal & Diskontrol Remix
Super High (Corresponsal & Diskontrol Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a4ddc90877cf04e945a452993553ce5f17cd3c09bb51afc3d61fb14a7f1729. 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/US83Z2304667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1539f0754203a79b3b2c3ae1c327cc4e08b875a3020a776c554295cd486f777e. 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/CA5KR2441147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ceb6a7b79e70398cffeb761427febc5023871972f1921e712917d26ff71935. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBKQU2022252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678f867c08667b51b498429aeaaf88e6c9742193ce7bbdbc209eb5096dd696fe. 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/GBZ262013269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc158cf757f93798b494b70e9efab22eb8bdb9f51b49bad0ff088880b18ce26. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBKQU2340381.