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 0xb2a5b5bc25f180e4aaca74717e356621e0d27b9c8666d50c1c22fe07fe5bf3f0. 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/b7bad1da-c93f-41d2-b335-26dc2bd9a18d.json and https://artists.proofprofile.net/proofs/artist/b7bad1da-c93f-41d2-b335-26dc2bd9a18d.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 0x3de27f4f5019826c1ab122cb6adc399ee6bde259fbb832f4361d7fe1149d3c68. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ZA8US2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9343f95258e1be9b6461c9106bfba2096da4ef9f3febcf85b2d004f9b00bb1f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZAA012300131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b8be16a320641490e82a88503cf584fa925dc709ea3fdbafacec3a3260c2c9. 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/ZAA012300128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29331a1c53c92ca1dbe013a86f309fabb44106c795633d19a40236b10d018dbc. 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/ZAA012300132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb907a8605efbb38fcf231385fd2ebc2a3534f15df26b5acd6385470e21414e48. 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/ZAA012300133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca8ae06970a3f9e619ec87b8d155adad2ad1ce3ae8cb53e0b3d3570f53c5947. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZAA012300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3eb6abb91d6b9ee54c2771993809a9ddf3d7662b902a7ee1afc31573595a2e5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZAA012300134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f09f112714558ced20e96b5e474f01965642f9bff073bcf10e5a20227669a34. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZAA012300135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a3f2bd851cd751f474f6e184dec8ef6b80814748ae3bc02bb2f49663c6427c. 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/ZAA012300136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbabd2bb8d4b66aac7372c97eb53b4277364a6a6df2aec9ca58c8210ece19a8c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZA8US2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5318cbb28c95cda6a5b80b2691a4f495564c6263befb5a97612cf159aa8c6ded. 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/ZA8US2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0455b713a2274da5f6efc104f4c39fd514df5991dd5384dba5dbda1df0ecb76b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZA8US2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de27f4f5019826c1ab122cb6adc399ee6bde259fbb832f4361d7fe1149d3c68. 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/ZA8US2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b95461779c430f51c9deac3d639260f5ef2cfdb17975fa4e88e9e60ccab0de2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZA8US2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f90faa4b31a3311f63ba332851c459fff6be5fb2cfcf086bf6a38f3df6124ad. 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/ZA8US2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05053f5d9ae8131374182a5254ab080c5fc9ace1d0b3f0cde0ecf453a70ee8e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZA8US2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda58f2318204db63cfe2d165a7d1e5e03c1b68543d3c437bf861e6ea227c6142. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZA8US2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0865a325401d85e42c59d442a34788e64ac794413bd8bad4e27a2f53c952fdfe. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ZA8US2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d180a91178f2da41d885012f83425354a513ffa06161d61f5f52c359a4acb8b. 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/ZA8US2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1494a790b1803061da3049efeb2877546fae9e268fa49a978a23f5f251e06f. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T20:33:17Z), 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/ZA8US2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54a05764d0d3d9a6f5b706caccda86f22341cd4669ffb8c4e22114cf7282013. 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/ZA8US2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e667ba15f90fcf140773af202130543f9008278a3d2d3e313a2866e016dd968. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ZA8US2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb039672603ae70b9cc3ec29ea8137ee57fad3a193a8e737a97a27e2c52347a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZA8US2100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cd1018f156d8f54ef1516485aaf9bac1d89e21915c04109b67c62cb935c26f. 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/ZA8US2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadbab6dea9f14a41548544f3b1c13c738639fd0575bc55c7899b173b934e124. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZA8US2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc995275ff67172efc6d333909953ee544655d843cc56523c6f9984742adcf35. 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/ZA8US2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5520905054641c041ea61dc9caf59049e5f2b9ba58bb10c5de642f82444d7140. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/ZA0W02300135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b8be16a320641490e82a88503cf584fa925dc709ea3fdbafacec3a3260c2c9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZAA012300128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca8ae06970a3f9e619ec87b8d155adad2ad1ce3ae8cb53e0b3d3570f53c5947. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ZAA012300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e667ba15f90fcf140773af202130543f9008278a3d2d3e313a2866e016dd968. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZA8US2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910d7a53c58848737294e448d9ea284a52191364ba905c156b2e2e93471085d4. 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/QZMEP2093612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07dc76ccd84a5a0c853e3ee496e66238c8051a6be6f69524b46a77d7f409721. 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/ZA8US2000005.