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 0x01784afe824dd5649f358adbf9581a3b03e6353f207d2ef4335f2189f5b0974e. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98e8aef1-c007-426b-a7bf-e3b7b4938134.json and https://artists.proofprofile.net/proofs/artist/98e8aef1-c007-426b-a7bf-e3b7b4938134.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nos quintais do Mundo - My community is humanity
Nos Quintais do Mundo Melhor (Live Version)
Aboio pra Domitilia (Baianá - Tabla Beat)
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 0xd999af30cb379aea56873253f5c81b88effbbf8180b1be8f3b08a1e9acd86b50. 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/US7VG1535914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3253bea77678ed79c32d998f29d6c54bd963253b8872b1ed7af4d5fc2625cf8f. 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/US7VG1535915.
Gira da Gangira (Congo de Ouro - Keherva)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bee2567627cefce25178ec79c421623a0719d1cb3c9f94b07b99c362094925. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/US7VG1535916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89132467ed1ffd93e5238acd0d6a177c1308736355d742f427ccd6af544fc714. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/US7VG1535917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2915d5433a4f7d7af6b741119515ecb7f8c25bd6cdce47f9d11b70f1e2dd4ea5. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/US7VG1535918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3057c05ff5b92c891962dc053b94455337b993d992b351b33964c4a2a3db6e19. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/US7VG1535920.
DJ Tudo e Sua Gente de Todo Lugar no Estúdio Showlivre (Ao Vivo)
Gaia Musica, Vol. 2: Live at Handelsbeurs at Gnawa Ghent Festival 2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e97ed797eccd8eb026b447b23b72ea2d998305bc69ef1f0773e63604b888aa. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZGLM2106909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5096934482e610ad896aaa36d3e7cd7d8a9c0931305ffa0a30eadd34531d896. 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/QZGLM2106911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585cdc2726585ef21b436ff9217d6fdd10f7675e4d9bb1f77032238285f8b855. 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/USHDH2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd699c3d61fcfe14aaf52d58ed2d533ec50734bef521c77ef6de327e1e772ce1. 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/USHDH2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190d3deca622be255da44abc25f118ae8c41900b159969aee5c00031748703f8. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USHDH2100005.