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 0x9fbd0bee6655d887cd7fefc0c6a2734f81646f23ef06e9271e7113da1a0938d3. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d879033e-8b57-4ba3-8ccb-29a30c0757f9.json and https://artists.proofprofile.net/proofs/artist/d879033e-8b57-4ba3-8ccb-29a30c0757f9.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ab41c5088ac8780fb75c9ebc2df190dabf9f9c49610ab96979e796584fc010. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/GBLFP2344086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4747ae4efd09b6edcc65349a34a2821af09b39f749fe4273c278e6cbde333f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-17T03:36:34Z), 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/GBLFP2344085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f45ad2b4e20addac86b258589c0a424da616a6c04e27a812ff9a7e49c459b5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GBLFP2344081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25ab0bface6b498806aef2445a09b8bc7e8cacecbe924e01b49a9744d715194. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBLFP2344078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38fe73316597db6e68d94861fc85d6084ff0c871ae35569e25a98ca6e51f038. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:43:15Z), 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/GBLFP2344083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2050c19b4be7b8c3837f491c2fe44f669c675d3e04f35045130ba79f113a1745. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/GBLFP2344084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8dda90bfa38a603bd91e9614128e3d2d3ecf735fb8be4541e49f212d5e3709. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/GBLFP2382734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5e6346b93053fcaf3c197892989636b697cce2b83689ba1252d94ed8fc299a. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GBLFP2382735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b126a3dc712e685c3c55a1ccac2ce8b177519a34d39d56758ddb851e787066. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/GBLFP2382742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd636359690671bb4248bb6f621dc96589ab02ff3cbba969f180c0c09b06f17db. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/GBLFP2382744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe21699213f8ae0cfef59172e0adee9b1cdbb6294dc0a15b0a765fdc6a750f19. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/GBLFP2382739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2802e459f0bb4dc0876202874c1fd5742aee519043adc8e33162281b5f5dfcc5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBLFP2382736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc0f79e80d2f62cbcf1b63feb35f863c734252b196fca9e755e7bcae75acc13. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/GBLFP2382743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1529611cc68da9b8c15372dd93f422ceeba6133b997e3096ca7ca2e1af9bb0e6. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GBLFP2382737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d72d4fae44301b151ff2839f856f8dec3347d7269928935841c1c28f4daa9d. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/UKXN22352516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac55dac1e544a43f28338374a788c05c4baff0e3f51e6a87b9b8d851c9eddefa. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/UKXN22352522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f4e6eab1a3bd08049b3422940c5531e2a1a2da7126876f82369e71bc5f4f6e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-17T03:20:15Z), 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/UKXN22352517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d6b458683af37ce7eeaf9891606c093bce003e90ce2fac40882cc5f69bb2f2. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/UKXN22352514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5898a60288386f0512f99d6376e2efd32f360bf84f34ad0c0483f0c47cca067c. 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/UKXN22352513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa407c4762c4a84337d65a4f109c13f8f380540dbeca5c2ebd153e2d9c90208. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/UKXN22352515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c6b2db571b59b4c46f8a1c4a9479b2931e28d7d95748223906f7a2c69baa89. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBMA22331943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede02c8cb21797c2d0876ff18878dd640c3d0af86d6379c2d21bfa43b04e9611. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBMA22331944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4be590859590730b55b6dec3d7e648690f145afb5a69e52530a77ffb7b7bbc9. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GBMA22331945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecfc0d7d894902ef81eb880760df105586ddb01c7f8474e956142939d490e6b. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GBMA22331946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33760ee0020385757715b21de2b6bae2e456ce57a781d5a9b7a057e33784c53. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GBMA22331947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd11c82cbab45276adf35b3577d8b895d37a7370d834940cc7a4770492eaa90f. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/GBMA22331948.