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 0xf836e281e7f2eda54624c6817221401be91b097a776f2a55adaecd4586ee15ad. 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/394f4ca8-aba7-4783-ac46-238f56a773fe.json and https://artists.proofprofile.net/proofs/artist/394f4ca8-aba7-4783-ac46-238f56a773fe.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 0x17c11476a5b31939646162eb66dca965dc089785e84e4b1755feea14148a3664. 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/CH6541642222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9145edaa13463d5211db30d69e48cc7e39466ebaf98e105ea2b4d76b3ce354f4. 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/UK4ZF2100334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c6a58e4395990e675a3b3ae6a40e0895f6baf9b100b39f7e28fefddb851a4e. 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/ZADGR1700165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457194b33fa9a940736e6335d12af3be4401c65177232451a53801034d058e5b. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ZADGR1800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff75301da45d38a073aaa6ec8e5c1e895088f58ebf7e87921b0e00b90f97a10. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZADGR1800053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b89953d71ec00249c768d5a46ce2473d958499b0edbf7c6be6a3e1c0df09d4. 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/GBKQU2447053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67815946880f03aa4d09874edc9c08eb59cbca9cdaeaa5008cdbd4b9981957e1. 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/GBKQU2306016.
Rain 2020 - Shona SA & DJ Fresh (SA) Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5cdb65034279691e2f7ac61ea25c9a7dcb87c783bc6adb8cf0c7c3ce975643. 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/GBLV62016857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6a00c8b5f8074e0d0ea3c5939c273cba7b33354ee194452fff0668a8a9d8c1. 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/GBLV62016858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0635c7fab46e78c33c39b8b37e582f2977f43f1c02d915d5d4627cefed937527. 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/GBLV62016860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc369a3423e2af6a4c232a3d107f583c1207d4a1032fc12b1bbbc4ff3d9cbbb9c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH3132000519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f3358510161e46e1ed1c32aa63d0725042190e43087b1f4ecb10da64bbba3a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBAAP0000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e7afe1492c8325b47b7e906a250108dddf9d87e47da6a5a15ff53cc99dd9dd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBAAP0000094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e7afe1492c8325b47b7e906a250108dddf9d87e47da6a5a15ff53cc99dd9dd. 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/GBAAP0000094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e7afe1492c8325b47b7e906a250108dddf9d87e47da6a5a15ff53cc99dd9dd. 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/GBAAP0000094.