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 0xbaef21202924862f97b779137167f7f7c01620214fef746dc2b723be25f0e04c. Chain 2 (Bitcoin): anchored in block 954031 (2026-06-17T01:43:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b1ae0d1-a751-4455-8c9e-5c6dc46acf77.json and https://artists.proofprofile.net/proofs/artist/3b1ae0d1-a751-4455-8c9e-5c6dc46acf77.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 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 0x1fa8e44fda590b9582510f62a2f7e4e0aee2bbe94543508c30d83c30bd35bba5. 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/GB7WM0900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e32ac5d3fcc29109e86af2b55c81614bd758521a73fdd29d5822c3c43829eb. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GB7WM0900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2771f73f8ce5e4584af56916a732997b4fa4e0b8d6f6e4c680787ebc19cacde. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/GB7WM0900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c10b2d881cd99fcd0baaab1bcbe10439153df401e0a203a024c3c2f757e8023. 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/GB7WM0900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bb37286701d4517259b8118f9e6f093d2ab83cf58af477fac74e804764d5f8. 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/GB7WM0900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40093c36440caed1c2fd217ca77cd6e33c069f5dc27276f4737869603254c98. 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/GB7WM0900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c2d8186f4cc7067ca456cec69ed2d75d1a0e90fcd23c4e7f3c0902a04f3a38. 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/GB7WM0900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cf48d6fbdf9d1719521d88d949ed04dd7545d079f59a1c0aed6c048eee7651. 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/GB7WM0900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a9db2525fddd2a1cbee584c81882764c7768f41feeac23fcb77ca9b421142d. 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/GB7WM0900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cceee006282e993fe296878800f2b1753dc00004880c1ac01584574c85c9eb. 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/GB7WM0900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c9ac0420d7f4a1f02936a297e96cbbcd8f8622cc0eee3e4be923d99c90e5c8. 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/GB7WM0900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537a1510fb4230088f763437f011c8ff0ff389a3686c1eba4855606a91b3506e. 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/GB7WM0900231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722624ad2dbc1d2d540da8c6d2c52e215dc3c33aecdce51f23d702aeb787347b. 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/GB7WM0900232.
Soursop & Mango / Straight Forward Side Steps
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14782d41b16aaab362254b33564afaa83c2267044a73018ce481cb42a4a34f0. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GB7WM0900229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc0f2c82a8256d11adbcd24da071e46201116c2739a0ab1542df08c61b3582b. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/GB7WM0900230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa1dee57506cba63458c3016d54dcd6487a949d21783dda1bf662710f80716e. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/GB7WM0900133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844aa76de8fcfeb45c2083dad8132f96894b19a2b9f1746edacfed4d16aa517c. 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/GB7WM0900134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de7e0c23c8ea3d33534fbb189581781236afed9a75ebbc7d29b600241ff6d61. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBDCR1700079.