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 0x7ad684e0c58b677d1d42f9811e2d91a665b640d82db48e6b65147c73d03ff22d. 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/79f9fd46-54c6-4153-b0dc-a53b1028acd5.json and https://artists.proofprofile.net/proofs/artist/79f9fd46-54c6-4153-b0dc-a53b1028acd5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Punching Darts & Breaking Hearts (feat. Sonic)
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 0x1456e3725fea65b9f7fc7ab494ebf71c48722a1b9b8522c96f3455977e66fd59. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:45:48Z), 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/TCACO1697419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3835505fa702c4862c19224e2c45fd91cbb928f803a3c332cddb5db32b253c47. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:43:57Z), 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/TCADQ1880764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be79e292af91ae57c28a7542c2f7ef2027384654acb0e94be444696eab0bee0. 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/TCAFP2106253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ec5f2a0d4fedf0e9e7dfe735a27a31945d4fb9a29e44a04ae0157a1f261681. 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/TCAFP2139133.