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 0x1a6284b6d4d0acf4a5d5567649c2ced8b6783147031aebdd4b7cd607e5f66fdc. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb115645-dccc-41eb-b289-2a8d4f6398ef.json and https://artists.proofprofile.net/proofs/artist/fb115645-dccc-41eb-b289-2a8d4f6398ef.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 0xd567b0315e782ccdec85cbc5041477dffc60bac959aade3d6079d8401d848f66. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:40:39Z), 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/TCAIH2452301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ada215e68ce34504bf404428bf31d4fc37312962a0e36e94fa27a9d66a4125c. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:06:19Z), 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/RUAGT2406107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943f7b4e92643011ee9d7c63f6d2ee0936cbe345e14ae560de3b6a19e8d9e3c5. 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/RUAGT2428288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9329a678753270a60d07fc9aa4090721b17394b2ba9841dfe8eba291110c41e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUAGT2473820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc150979bb9fe0956b46a1ddd4b4d796888084884d83b30f9e767db79df1e8a94. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:03:54Z), 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/RUAH62431306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371fa4a4144851ed913ec97b432f587173cc287c78691465a749970bf6348632. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/RUA1D2546525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a118db379d8f6bf72935e3ece3b96795223acda22ad40014ca5ff2fe03f482. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/RUA1D2576982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc515f11e215e1da11ebae9d2aa36b73d7ca3341739c12f2edcd965ff7b842076. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/RUA1D2594948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1923adbc316a8f986c99d1eeeaf9c4428d8cf43e2672e9ee619afa6f5702807a. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:33:57Z), 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/RUAGT2506458.