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 0xe23b102a318ad268923ecb30ca231daa561d3b2880d46e3d4da0d4fa49b848e6. Chain 2 (Bitcoin): anchored in block 953684 (2026-06-14T19:51:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65a5466b-56b2-4cc7-baf6-9fa0ccbbd8a5.json and https://artists.proofprofile.net/proofs/artist/65a5466b-56b2-4cc7-baf6-9fa0ccbbd8a5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Karaneeya Meththa Suthraya - කරණීය මෙත්ත සූත්‍රය
Maha Mangala Suthraya - මහා මංගල සූත්‍රය
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 0xd64eb69d9f04ecb5580ca1eb0efc71e8b3145a7cca081f921029b6f06f9d87ad. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QZHN52339067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fd422899eae08747e1404009f76815b1c4003f2a466fa8554728a0495db817. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZHN52341594.
Meththanisansa Suthraya - මෙත්තානිසංස සූත්‍රය
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5e95e598079a75e1970ccea1ffb65e019ef80eb898abfc0149f5218d32f32c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHN52339070.
Maha Piritha (තුන් සූත්‍රය) [Thun Suthraya]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7801a94d8e597fcd3991d2de99b51ffc20ecb36e593f83fe6ae539b9a5425c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZHN52384643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775cf1702f6b919ec4f68d0129a77df2feb46da7455962e45714d8617d9a9fc9. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZNWS2381220.