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 0x792faa6dada0ee3b5e7830b1b120a518ccfffe379a89f459df1cd3b7ec041c1e. 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/5a9d625a-7824-4c71-a6e7-fc0be368882d.json and https://artists.proofprofile.net/proofs/artist/5a9d625a-7824-4c71-a6e7-fc0be368882d.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 0xa74e570846c35ac5e30bc9a793bf50f55de3516e6b1f9097a31b2a1fb943e1b0. 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/TCAGU2328391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad05679587d522e3441049aa663259a424715cc5df7a303eb9e16225fc289b1. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/DGA0Q2398561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29eca0e8fad3df217a1fdfe2e4aa300a126508c50626d9f5a99cb6489c98e725. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAHD2300451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f47001e9cd120ff328d7dd361c3dee6ec516823c5056f88dddf094eacf012eb. 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/DGA092370436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eed89b09e1dae19459e2dd9d6014fa61b133da2622f792a67fb13f4cd65bb86. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/DGA0R2302020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b7e02f40521750a848ace7c20d77761d1b22dbde168fd4c0ac01862168af93. 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/FR10S2462540.
Ben Türkem Dadaşam (Erzurum Oyun Havaları)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcab7b3feaac5a7e5362437f0956013f1d52d61c461f1f8bfa87249f8bbf22bc. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DGA0T2452325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1f0b950887abd5bc2abe7058588313dfe44dfc001e29cde956a92f091517bb. 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/FR10S2594001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa011f734131667295770a100fc6b864fd96cc2cc7d4815251c52b9878acdd72. 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/FR2X42511270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e39613958bd7b7be7d59e59005b685684dc2e04a2f79c45a2e89963eb5f8a0. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/FR59R2555727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cc2917261d6005df8de3b415ad042d7d1f0b1802f056497a20b6bf36776128. 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/FRX452591502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352a86e67b03f14f093ab32a4894d7b7d324b1897c39fba2a78d8883767d66a2. 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/FRX762510643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77d43f278e8db69a3ff6ec718f56913f1c0bf6afe48dfc800c94ee668485846. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DGA062545225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16b9d03647e734c86577df1126b2a4717b3f95aa4651ce704bdfb393dbd9d4a. 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/DGA062583937.