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 0x656549f0f511bfaa21719582ebc9d430cb888a8908926669bd5897aa77ef8457. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/048979c6-45c2-460a-8acc-02362a39ab08.json and https://artists.proofprofile.net/proofs/artist/048979c6-45c2-460a-8acc-02362a39ab08.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Aeroplane (Live Recording at Sierra Studios)
Communication (feat. Katerine Duska) [Portugal. The Man remix]
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 0xb7f0ac3ae2d46e82f1c8aec7a922bcf5edaa1b9e78a999714f9b02150bc8d4c7. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GRCB12100179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b0140a73d5fab2c6f7f2afd763eb4dc60c2d6b9b6f4791fabb849b46cd33fa. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GRCB12100189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3463dcebcb3cb4f13958f209c7f65ee852eb81cee27d312f74738073d3f208d. 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/GRCB12400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ee074fb186793af64b1ec8f7150fb7ed0c7ca9c177a6cea71744fa900cfb0e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GRCB12400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa981aaa785464c3db618cc506e46a702ec443fbee72db4d3023d7d3d5dad23d4. 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/GRCB12400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ef85ed2eb2f65c73132873337742a6e057ea4949e71a46ffc9b598d01500c1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GRCB12400274.