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 0xc037328a440191e36c575d39cc0f987839badee9746769208533793592f9877d. 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/a4c43c49-cbad-4a41-a6c8-51c1cff62e49.json and https://artists.proofprofile.net/proofs/artist/a4c43c49-cbad-4a41-a6c8-51c1cff62e49.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 0x85133cb3fb0ea616cc4ff9757a4e2267da44ff020fbaa0364ca70ceede30f4c7. 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/BRC070900271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed93aba1fad58afd6594a098947843094ee8b129226e42e85c2f1c4c276b7d6. 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/BRC070900273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441d3e4da57dc8b77fb6140721f891417520cc3ae29ecfb6097e76f47e70ee8f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BRC070900274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b893c6c9ae376de906d552705c8d242f4b31bbd85eeb40b31de83a6c88af7e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BRC070900276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8535844d137a184d2318ce70f8e78e44a9aa412dcdee18c283ada3d31488329d. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/BRC070900279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1677f58ee57708432b21601dd04f041db2280e68c4e02ddf54509266a726ef07. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/BRC070900280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c96a04aa84b8be7a25b983fd245946d9645c3e8ff7cc9f17d7c5246c92bc24. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/BRC070900282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a9bce7998b4789106e964db0f7197cd2733014d26c723ee1323250876e0962. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/BRC070900283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1387450d5ce12c65549646eab6ad16812f3187fa80be0158254ad2a7413cb791. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/BRC070900284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97fd69dad266da51ac72524cbb50064e63cf3cf4bc4242c234846a86bf832e0. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/BRC070900286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2401806c95c4cb71325d383b22e700edfc9b9937f70bb1bdbef7a246f09821. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/BXGHW1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb376c3f68b873972a26b727f6f4ca4ae32d34d3e9437384bf9f8012211c4c4. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BXGHW2100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aebaffdc4146d085a9263bfaa9bea67295a59b7ce970feffaac487456fbe40c. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/BXGHW2100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a64d76fa151cd3c7b166653592fb65763b0766633ef3e234817efbac7a6b0b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZW9K2246285.
Nuwance no Estúdio Showlivre, Vol. 2 (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6166fda444bf563bf1474b4240879419d7682623880a926aee9f97ca3b0cce2c. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/BXSSW2201360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125bc9cc8da8325aeaa893b230e85840da99cc67d1eb33bf97ab34304b8ea98d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/BKNRN2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67d996b29d6f0c3ec5377e209df97899851072dbaf118ebd06b571ac5778a35. 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/BXMKS2200168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0c72b717867837247f8c021fbaba12923a151a3176abdedeef1a5d970b0275. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BXMKS2200170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67d996b29d6f0c3ec5377e209df97899851072dbaf118ebd06b571ac5778a35. 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/BXMKS2200168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0c72b717867837247f8c021fbaba12923a151a3176abdedeef1a5d970b0275. 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/BXMKS2200170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0c72b717867837247f8c021fbaba12923a151a3176abdedeef1a5d970b0275. 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/BXMKS2200170.