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 0x5e52333f620651ec1a2a5378d942343d7cd2d8b90b1b3172e8e7ba0715d7683b. 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/13a437c8-f936-4558-9cb3-186b9b1ba433.json and https://artists.proofprofile.net/proofs/artist/13a437c8-f936-4558-9cb3-186b9b1ba433.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 0x6479a101b3bb384334828132a8c7d504658a36200ce109a3fd2fbc3831e71458. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US7VG2418953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa002bc3552e79be767cb536965545ea3d852e17c75942561633d18b0dfde0567. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:35:24Z), 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/US7VG2403489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb7ca0c6e55affd7733addcab82758e3f331e7889c97c878d2fc7a4c1776c26. 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/QZW9M2309857.
Fazia um Dia Bonito Quando Ela Chegou (Folha Seca)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9898a98e74350f0b103379b44e1aeab5615330c52a922ef2297916d05cbf75e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US7VG2403446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8888803ea78f4bbd7d0c3c012858af9b11d6b37f2d727474285791eb5aa986ec. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ5AB2457658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df4e1b9bc089f47297732a75de5085c0a87c7f487d379a727377feb22e32fcc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ5AB2457660.
Gute Gute (Hoje Eu Vou Curtir) - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa400f796875cbb23ffc7b93e9a80a5c6c87334a3a474bf2f4d76f9d621e6c0e5. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZ5AB2457661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a1d79942d79df7ac7c32aabe2b93923ea9ed55b465ced0252ad48190ffd88b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ5AB2457662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433dee4e039b74b05aad01301074b6b35db88e8092d0dc883053834ff5185536. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ5AB2457663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71fe69213d3f3d58691157ac90c3ca9e9c193e6c3f9c2a024fb615910fe6066. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BK5AP2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa5cf76670ebeb324741c3bec006aa0aa0913ee6c7cc179e59a2d20b811249b. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/QZWDW2432570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9491264e282d92814d1e13b4368d92e138b66b7905567d53ad243a0bc3fe6206. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BK5AP2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e269fcf7e2dd11735874104f184d66effbd9b8581e63fc295d5e1c3b3744048. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BK5AP2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6492ededb67806a168f7fc783c618ff5170626f2ecef5009fcf7bd769af164. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BK5AP2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e325d6446d32207b25f1813d38f2930555c57056bca201a44cff5228843663. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/BK5AP2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7663f09421defa3b31033c972e409e6dc1f5c4d73862c54784d8921c49b0e9ec. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWDW2432572.