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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94b10635d20d942f2094abe6dea603a23f7bd012834a726fb1f5354496d2977. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff520961-1aa6-4f10-8214-a850d326d103.json and https://artists.proofprofile.net/proofs/artist/ff520961-1aa6-4f10-8214-a850d326d103.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Louis, Matthieu, Joseph & Anna Chedid (Deluxe)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f230516f843f35503e38f86840a65995ab0c65bc8314209e522e175a9ada135. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FRUM71501649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9428c2db9ae2ab7c8d0233e6fe9e5fd8cc5a0041b3f8a5976ad86d586e15e93a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:06:53Z), 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/FRUM71501650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7c4607afe2d7549c1e7947d8af15e8a418d37a7d7fd07056fae89a96a44f5e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:33:13Z), 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/FRUM71501674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786430e589422db32e43230fd9f9b21b1cd3ec5dadcc837c1adbe8f8eae7c77e. 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/FRUM71501653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74502a5ae5894d008b4a4c6ca077c42d20481941410e37bdb78f400cc881791d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRUM71501654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeffdf5e137ac8f146c40cd2c489f14c928709b376e5bf40f541f03718f8c910. 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/FRUM71501655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ac91fc58682fd9e1a94a189073d3c0209c42fab21e7abcbc894bcbd248e1c6. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/FRUM71501656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0cc90e4980bb7b40a75d92742a92fcaecaee19bbf878c7848b22f07decdf88. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/FRUM71501657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c742d39b12a025227908429e891658239c8b62d3bf44b439ab5d0fdbba6c79. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:37:29Z), 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/FRUM71501658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98007da95b9c2485b98f911579bc9764a1f1b445153465be500b47093fe665c2. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/FRUM71501672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7f296a4ad6931187a9296042b74895acb9d8b042649b8f8469e9edb3e167d2. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:07:00Z), 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/FRUM71501659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bff760105c91710b45c9fad23ac754f3f8d03782a613af3d0991031ea341a0. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:42:27Z), 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/FRUM71501660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5987720b7b53a0153347961572fa23e518515655d8ff7c83121834884857aee. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRUM71501661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbd76ac09ed042b1c390afcb3cc2b634b07d30afda29cc96b7f50f250311cbe. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FRUM71501662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0205cb1e7269c92d290b09224ac975e3c60e4623292c85ffae1042411f16a4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/FRUM71501651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fb838dd45e8fcc85e3634960ba6c9e6f3461c19998b6b0ff286f5316e8ca9d. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T07:58:03Z), 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/FRUM71501663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf766c85845422c4d3c073fb55aca7d41bfe866d5b4db043bb12ca310aa61403e. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/FRUM71501664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d28e8fd55d620c26e622ab51a2ee8983ec91b7a6837d3b0be53a997f771ffbd. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/FRUM71501665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda367659e5de61442d5ba7872c57b96996f17d5b41b1223a316e6b271dafbb25. 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/FRUM71501666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600c582b784b960787e9c5948a7bdbbc75d3787529a9a4978ba71db7696c9052. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/FRUM71501675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e50f1a6494b713eda8722e0656211b5c0ede1b1258cb3d52c2e5c10e560fde. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/FRUM71501673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396dfa959afcae400b3c8e1092340340852e31c1c3758f780ebc9f5e0ea61295. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FRUM71501677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3966a98adcc9a92027035f6a49b83074463ed6d9bcf6f6a70f950f22fff5f453. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:20:36Z), 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/FRUM71501678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760a34fc313f8138a27f099efcab3ec367aaa4e76e4cb7c3ae05d615dc213811. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRUM71501667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1eb83340f269e2fd8ea0f7d5adb4e2d1705a0870c442dbe507ba2037d2f674. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:52:04Z), 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/FRUM71501668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8e198aaae8f0bed9ecc7cbd1773f57bb4c788d7e6b3eac4640161b64bf8f4f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRUM71501669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c09ea406d28e3882cffa1419268fa59e97065afc81308c004a11244d44f27a6. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FRUM71501670.