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 0x7cb7ba1ab020a6caa09f1600ed6ba561aba53d9e3c2bef701a3efa0e4e4fe9e9. 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/05c8fbe3-34fb-41a1-b9ad-8c2bcee118da.json and https://artists.proofprofile.net/proofs/artist/05c8fbe3-34fb-41a1-b9ad-8c2bcee118da.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 0x65f783d8ed03c1ff13cc011c8f02fa8f812906a27211ba9391e6bdf7316828d2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CHC492000241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2143622e75f698779bca7e01c040806c23495a030c21af7e4ca435f07c0e13ca. 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/CHC492000242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb31c18fe0ab2842bb9deb7f9016e44b22d61fc4138a5bf665220127696a068. 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/CHC492000243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a86ae38a30ddbd0e396912a8f394679629235452efb84937ec7dfd6d1be301. 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/CHC492000244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbe19cfd76e14b10a415ae5c5a1fbc05cff8b8d251ea4c704b283b708f96f33. 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/CHC492000245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e735d36ad5d3aaaa3f3c87206be19dc0307dc7f954156ce9439d010805ee9a. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/CHC492000246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2b012047114ee43482c7336163c3130f4b75a7af0f3cd004a15a032936f0a4. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/CHC492000247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bf517b800862c8a73ddbec32306649bf1611e9532b3181528a0a3104bdcd63. 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/CHC492000248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54ee47ca57470d413e2e9e3162464886de4394799c9ae646139fcd2d9e00371. 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/CHC492000249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b36653250b539fefd2836c2a6aa4ea4ce37b1ec6bd8260be26efe854c217d0. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CH7812359891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a647bb348fe71b03a5bf76f5588b21cdf9905f2d39223f1ade26eb733da3cae. 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/CH7812363527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15707aa0e3d33f03726eb276404c809ce5753f331de9541494b23e29fd4937ce. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/CH7812359890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068b4a51e5b87b428776da3055bc8c49c711ed4975c7db22b668f9eb2433a79b. 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/CH7812363528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8173610a4ede0a06a2b60e599cdf996c8cddd9ed6a5d974bbc88d12c6c11199. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/CH7812363529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53924f1ee2038c5287745be96724d3ee4e68b4cc9ca68ac2a8c69e072b93fb9f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CH7812363530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc713f0e7c5be0caf3d09c2c3cc80a8398c162ec550bc45f5b0d569cfda9bbfac. 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/CH7812363531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15707aa0e3d33f03726eb276404c809ce5753f331de9541494b23e29fd4937ce. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/CH7812359890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b36653250b539fefd2836c2a6aa4ea4ce37b1ec6bd8260be26efe854c217d0. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/CH7812359891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f783d8ed03c1ff13cc011c8f02fa8f812906a27211ba9391e6bdf7316828d2. 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/CHC492000241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674b4891687ec2a74fafd0ce7df9e1bf47b3a22b58dd9c312f560fcc79e9e64b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GB8KE2056322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc098fe94424bbef085c66d2f181fbf883ac8bca024a99e5c27d30b9b34a2a216. 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/GB8KE2056324.
Crispy Honey Crackers - Mannequine Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990966f42eacc6a3362466fc1ecac9bf0bf8cb6da672115e61d625bdb8a81f89. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GB8KE2056325.