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 0x8c8372537f5b3dea3a3f7af30ea81555ec05b4223ecd3c8226466e831711a98a. 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/fe5ae08d-cb71-4412-8e23-02e7c79bd595.json and https://artists.proofprofile.net/proofs/artist/fe5ae08d-cb71-4412-8e23-02e7c79bd595.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 0x65f613f48c226472e40c19f0f6a34851cd97a7dcb4bcfa7da82c091a87d59a36. 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/QZW9K2483741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799e74a767dd64b4745e85137c4a04e16abba87f06efbc30b85bd7b4bdcdbd55. 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/QZW9M2332908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecc4326bf22b26523ff7d0caad807e25b8e3c67327b25a87e47ffbffe26e524. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZW9M2332909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e34f599ba973081f12a93cef7300cb54e0c75d5b3b9021e6b6d5176c2fd255. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9M2332910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1239c45f475a27e9ccb28dfa9b80011dfc1be3dd8ebec4db017179546912b92. 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/QZW9M2332911.
Mtg Oi Como Cê Ta Vs Rebola pra Vagabundo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3059aa6434d350b08ece1cd300ea714a1b542de579022244127a49c8fafa9ee7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9M2332912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b32f5d93b797e04f76526e09b55c5bc5299d26e721522f95ed7b32c10e6f9d4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9M2332913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfeede74e95f9837c1eb975c03adca273995716385c159c552dcb4d8386d4f09. 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/QZW9M2332914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38c6ff2bd65fe5f31bf974ccfd78a66bb2f54c4c24b04d64e5f3923babd6c7f. 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/QZW9M2332915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d41b162ac417d7f03883776b1362828916aac950fdac98dc500be140443ffc2. 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/QZW9M2332916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c6b5ab4fc86cc5ae825419c056484a46669568f10d9f8d8cb166d24bc3a0c2. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/QZW9M2332917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f3d4b5a9a59d578b6307668684464e6a6716aaacf1bed735c63103a6ac3754. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZW9M2332918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0566c5b1cbfa7abf294655fa1b27bcdee9cd22ce33c80a6ff0739a65dad4b7d5. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/QZW9M2332919.
Mtg Pras Que Chupa Pirulito Pop Vs Deu Match
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4c51cab2de0c7f21abf73f050657d6b1214563dbba4dfa88b6686135cf9a6a. 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/QZTPX2423620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b05bc3073035a602742b0c23a01e1ae4d9ca54ad78e1b2aad8f33660b94c9f. 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/QZTPX2423621.
Mtg Catucando Tudo Nela 2 Vs Eu Nem Gosto de Prensado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9842037c15c6d8a028931ff9a30895edf1128a51a6559e435ae0bc42857a594. 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/QZTPX2423622.
Mtg Nem Rico Nem Pobre Vs pra Comer as do Job
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32821fbe4ad647204e1500d630dad000d1c69384b7007622a43de8f3d15c8f1a. 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/QZTPX2423623.
Mtg Ela É Mec Lanche Feliz Vs Dentro da Base
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fc4becbb381f4cf9f8b4c33d3c642cb9c35946b376c208a83d2b02d77e4510. 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/QZTPX2423624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1078f47af2f3cd3b5c29a7e850c74c109f9e797c0fd7c00120befa6f873ea108. 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/US7VG2564024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d983080d5a4985747e930b8bd2a2f3bafa25b165270a41ac99373267484eb0. 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/QZW9L2454044.