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 0x5d2b77602fff505a241aef9466f73687f284d549e46200db5e9fb1b7d77123a9. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6b93053-013b-4550-8a01-8cbe19c3a650.json and https://artists.proofprofile.net/proofs/artist/b6b93053-013b-4550-8a01-8cbe19c3a650.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 0x4d60e0ae8a0d4858190d112aaa7befda1b731763cc76f661bd8255eced9adac5. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZRP42219168.
Greenhouse Baby (Live at Chime Studios) [Live Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d72ecbc7d91ec5f87e56e49b214982316c8d4a66ce0775d204b4e2da4d3bc8. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:30:19Z), 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/QZZ7V2497247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e79508f38d420f43ec3151596191e563c78844f3649f0c05bd70efc7372b80. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:51:48Z), 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/QZHN62526733.
What If I Told You I'd Been Lying The Whole Time
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaad09860bcd4399e4d9193de89f84c7fe80f5ade0c4fc6e1ef7a584510eca00. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:09:23Z), 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/QZMER2572569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30738322552d5350d48d14526148e3b0e27869d9dd96ec9f0d5ef94d206292e7. 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/QZMER2572570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4341c0f51fb124603eb2024549585de730281a7601d235b814accfbf52796d14. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZMER2572572.