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 0x5cd42e32abb12841c7da63c1e9d82790fbec4356e0f0218bb28623ede2990e01. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9ee0d37-7d69-4eeb-88c7-5d47163a4248.json and https://artists.proofprofile.net/proofs/artist/b9ee0d37-7d69-4eeb-88c7-5d47163a4248.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 0x52ada07efca35daf4b026223f39efeab88eab1fcacddfa16719d8c3e5915f5fc. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZES92250850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcabcae549996b6a71a519b929522c8839ee979be07089473415b2ed2f9d8cd. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZES92250851.
Sure, You Can Skip This Track (Asshole!)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc8c8f4f7f5e35f64d5e4a77da4e44101dad7d7526f4b96a6f0be20d73d96d7. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZES92250852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b406bb909b0841b38f7573556943578d97c21f67f378ea56526b942d3f4e206. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZES92250853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fcfbe7fdd3258067e33023a801f6960746af546ddba3720dcc6895cfff7629. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZES92250854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceef51dc6708b001b71a1b0830c3595380a37126358db645f94be4f969498c39. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZTBC2318963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc1ecbc10bdba6bd1803975f0024a4ee07a922b804b9f0fb5c2c5c51f40b93f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZTBC2323107.
The New Run-In Song Of Your Favorite Sports Team
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204cdbe7ef572e945a0558ad2f8e782634212ef6b5a4e5014d7d07c1f22453e2. 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/QZTBC2353681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f486df91d4ab3dd436bd01bad6f9b3f6b2ba10a807cffdc99c46780b110ff4f. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZTBC2353682.
Sorry For Spilling Minced Meat Into Your Soy Latte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a660d1a9eea2f2fe06a0fd3670181b80f2c19768359f66994d46e0020094d1. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZTBC2353683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578c64ce3d26cbebb1e42b638cef2bb50da14e6043c626763b2f3c220482cadc. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTBC2353684.