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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d448dc5f2a76e08ec4f83dd06a1dda85518fd6d2b0b8a2b8802ae208a15b10. 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/0440820d-6cf3-4499-b00a-d21fe66ea9ae.json and https://artists.proofprofile.net/proofs/artist/0440820d-6cf3-4499-b00a-d21fe66ea9ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Den Gamla Jukeboxen - 1999 Digital Remaster
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e8d3d618d02fd39eab621e17acfe892585ac06498d9002f4997e8143793364. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/SEAMA7525170.
Tala om vart du ska resa - 1999 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a46f27be663e6daa5802ad9013ced75a5ed072708a9ea02320901d31b835cc2. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/SEAMA7325060.
Sommarn '65 (Raining in My Heart) - 1999 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3704e6fb264a8bfd8beba4b25fec933a66d975e213e9fc2ef094e1306e78ea14. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SEAMA7725240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70baf61acfc9fa7480e652a01914dd49eb52bdd65b07d1b2c760043c0018fbdc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SEAMA7760060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70baf61acfc9fa7480e652a01914dd49eb52bdd65b07d1b2c760043c0018fbdc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEAMA7760060.