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 0x5820a6357462745f7ce70f188551c371920daa72055d4cbf4a2bed8f87391204. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/93636341-8e1a-4498-a2c6-4c00a3cf902a.json and https://artists.proofprofile.net/proofs/artist/93636341-8e1a-4498-a2c6-4c00a3cf902a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Immortal Memory: A Burns Night Celebration
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 0x552c7e2f7350f6a38bfdbd515b638493df4e4dd48fa82a0484222af0f1b5bb6b. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/US6XX1661002.
The Dreams That Remain: No. 1, Song of a Dream
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf79b60e34adf07713886b7c281ac81e2a786aea7a16d3d2b52648149ba38e7. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/US7852000100.
The Dreams That Remain: No. 2, In the Forest - No. 3, Transience
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731c05119036e77f16f30627427d89cdb4d283295369509030da5cb40261ae49. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US7852000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5009d24ebfc4bedd64ea2d2d18e6d224bab35a7f60409c03deb35943df5ab7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US7852000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85a8900aa39b41d5edb2178de8305be9ba33eca9e58241ea0d7cd0c9a3e4164. 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/US7852000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057e9f0fb35bd8f8f0e4a3d7a244c351d37cbf39230f40665a08a616e9975e84. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US7852000067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7ee3b5a0c80e8345c22b8633ba0f7ba142519c68506a56e17e2c22d5059eab. 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/US7852000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e268e8312918951090b260aba619e602adad612c6d8931011a82260dc61ca0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US7852000069.