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 0xc6e6b7f5dea99c24c984018c1a6821cc461a71d1daecbb5d642aeabe980df470. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cfc9b0f4-ec97-4ddf-9946-29506b29fb9d.json and https://artists.proofprofile.net/proofs/artist/cfc9b0f4-ec97-4ddf-9946-29506b29fb9d.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 0x92185ba2d3c7ddfb6fc4269b23f73f666dfca5f46fd7bf09dead7abdb79dc1cf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BR27S1500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fa4e0273add116eab92e2d2f6abb8d58100fdcfb593c2ca837d8bf88508542. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/BRWMB1700111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fa4e0273add116eab92e2d2f6abb8d58100fdcfb593c2ca837d8bf88508542. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:00:04Z), 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/BRWMB1700111.
Socorro Deus (Participação especial Michael Sullivan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c05d2fa92170b8480e300e2f0d3e9ac62b0c934119ecbc00c91e14272732bff. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:51:16Z), 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/BRWMB1700114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8e2f61da0f506fc081edc42976e03df9769809f1cea2abbe5bc944ed1227ce. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:19:30Z), 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/BRWMB1700156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20817f2442071426d179a6a10fc9189dd0a8dfdcb7f64b32bf4718bb3d39d032. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:28:38Z), 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/BR27S2300005.
Conselho de Amiga (feat. Anayle Sullivan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2838c822d8056a28bcee47d1c1842633d989c4ce5af594d67b160ac86b03f3d6. 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/BRSME1500188.