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 0xfa281895b7458c9e3b33191ec66fdc7865c5db91be51a758bf9a4c4b9cb23160. 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/f9536b11-0632-4564-bcdb-2ad0aa27f3a4.json and https://artists.proofprofile.net/proofs/artist/f9536b11-0632-4564-bcdb-2ad0aa27f3a4.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 0x795d4332069c32726a070698511aa57119b2d220b25322d9578d6b11d9422271. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/GBDRT2001002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9fd671d16f319ba67f58f080edb67df5cd7d1d58fe57ec7fd293906af6c607. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBDRT2001004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af54083cf46dbd57b9a2508e9825212d7ae98ac6a6e58501745e1b8137b40b5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBDRT2001005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d881c21dd53339cd0f16a6ec1a8becde7aee10ec537235260d5ccb88b9ea5e3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBDPX2011001.
Some Justice / Burning Passion / The 1994 Dubplates
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb42a98069b703cd75184ac16dc65ad7195fcb10deb0824ef5824c03e871280. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/GBDRT2201003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be206644f8e9d73de89c816b2fbc5e1424e8fdef507a1e0f5ebd85ce7716628. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/GBDRT2201002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0f8042ddde0f0fa914c3090cae6fdfad039cd4a4301c8b7027452437ed1214. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/GBDRT2001201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765f897994672ddd2896f07bb0b4608bc3816dacc3e3e29bdfb4c77c69cd37e8. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/GBDRT2001203.
Some Justice / Burning Passion / The 1993 Dubplates