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 0x96bd5da8056931b347d881b27a377d6e95570c3b101327ce2aebd98e9f311e3c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/277bdc68-9ef0-4f97-897e-8b26ea0ca087.json and https://artists.proofprofile.net/proofs/artist/277bdc68-9ef0-4f97-897e-8b26ea0ca087.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 0xb054f7437eab4452fb8347860f0b84f9551a28eaaf1c8aa8c618d900151133a0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR7GM2300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0b25d2194dca7f9943c7bececd5771c6e88e4648ec4ca18531b031d3e1b0cc. 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/FR7GM2300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6daac119adaf501f248504b91f8c3b0dfbd56d02fb838afbafbe4454183918f1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR7GM2300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b30e905c68e23fc461bfd64b4d8c5a27984380d4b155e824ad57063ae953b98. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR7GM2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb486b722dba581b3280b4cc6ac1c56f6b8fc202b3a5e3658fe1b028147982216. 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/FR7GM2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6937cd25f79089a75f6b62a6398ac6e0ac22ee09ac0f4552612e858655879d27. 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/FR7GM2100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3347240eeab573fc14a2137bb384b895c19bfe322f22cbec17ea6b29459ef0a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR7GM2100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791bb7736497817863c87ff4adadf6926048f16d9cea7bfef924681d92ce5ef5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR7GM2100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefba826fa065078821bbfbdb84db9a57e7738ac3bf214dc43e28de568e7728b8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR7GM2100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297f6229b6d90985c5451a57dc4134a913619a7c0267704f13e631142b9be011. 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/FR7GM2100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0feb33d12ac89d18547d1dd177e12ac2b05947c18e0c170a3e070cee81f98031. 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/FR7GM2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3725cefc052e95b9adb2fb3e79054487abb726b433d7c72382b4b498a55b3448. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR7GM2100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3192af125db0c342b17565f4dd7aada06e2beccfc6bbd37dacb412ac9a98350b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR7GM2100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd02109f39d16bd76bd795ea69ecac4590821eb7c956edf9a8394ab20ea0bdaa. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR7GM2100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf00e403387e875a71ab6c2119fd46eff2d20743a0f8dd5939e10a7f756b0e35. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/FR7GM2100130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9482459fb14e28be1eb6421127bd37dafa9542c36e14b9706d08241c5716a22. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W11611406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0dabb14722ba16d9915ffb18724e936d39211435bbbb5b41c7a68db661e4eb. 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/FR9W11611409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610bec6882f483af08cfa0a380ce32f606b489d5f8f9bf31d06898f88cc823d5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR9W11611411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016e4c8e06de08fc8ed54a945030eb887178a9dacc77a1f7340f6b329bb251b0. 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/FR9W11611412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa395afe1c5381623a9cf8068aed77046fad8a8abd994f2de4c6e181e28cb1913. 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/FR9W11611414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635851df5532cb15837ccef4ce5fd594e228cdad7042c6d15f370cf4dff9b15b. 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/FR9W11611415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84acca238f0903f9243d30a1f5ef648decfd6891e2a06eda7e9c80216ce31462. 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/FR9W11611416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd02109f39d16bd76bd795ea69ecac4590821eb7c956edf9a8394ab20ea0bdaa. 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/FR7GM2100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefba826fa065078821bbfbdb84db9a57e7738ac3bf214dc43e28de568e7728b8. 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/FR7GM2100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0feb33d12ac89d18547d1dd177e12ac2b05947c18e0c170a3e070cee81f98031. 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/FR7GM2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97628ef7499b299278bd87f0e59fe75628af8f2edc698c1c7ce73aac2f773e14. 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/FR7GM2200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b08bbb37eaaa74abee637b8903909dce12cdee75f5afe269694a70bb1830028. 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/FR7GM2200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3725cefc052e95b9adb2fb3e79054487abb726b433d7c72382b4b498a55b3448. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR7GM2100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0feb33d12ac89d18547d1dd177e12ac2b05947c18e0c170a3e070cee81f98031. 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/FR7GM2200010.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa371f6267e494a5153b5ce37dd4c577a8d443c7d1e47073d36b83da8acaa575c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAHL2330657.