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 0x59c1d3a960d1edf4d709258141bc1a8c29706d762810103b1070b72b61fbf695. 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/f92ab273-32d1-4cf1-9870-906a9089db52.json and https://artists.proofprofile.net/proofs/artist/f92ab273-32d1-4cf1-9870-906a9089db52.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 0xf8e5d0f12d48f20fe1aec4548fd875ae2154ee35762784dcb01e4ec9425e7f17. 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/BRMCA0200309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52632fde33657a8f1156b13a786a9d5216946d256165f7b83a54215a8cf320f. 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/BXV3D1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c90bb799ed7a231306fe518dc13b97536558c2c886a791fd658234f7b84c64b. 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/BXV3D1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840e20c7af06677e16a46fc1d47013d45677d956b4ab8b868e0ccc22c0cc4533. 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/BXV3D1700001.
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 0x8901209d405d6ffb68107dfd8a94086491ffa8a4c29c44f31d076ab62be10bb7. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BXV3D1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47606ca607472766b5253327d56c93f861e2b40b6d189714c99ee10089e1a6dc. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/BXV3D1700009.
Moraes para sempre Moreira (Trilha Sonora)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091dac3d5107dfd956d4bba35d8269b2ae86fdd86a465c42ecf604cfd4091d34. 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/BRWQ61300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17cd61c92cf41833bd80ad06a8558d9152ce84136ec802c1e0a309de6649b29. 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/BCKON2100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adf3f4a751a865d4c39da0950320ade988768e7a7428075c966ceb16ce09f78. 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/BRZGA2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f042e91904dda171d3ffcbbf8661f47de07fde9f9c856a649b1e1d56043bb8f. 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/ITC491300124.
Brasil Pandeiro - Live From Flamengo Park,Rio De Janeiro,Brazil/2011
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca7377fd636de61df403092ea28a952556ff6884b5e676f53f7b44664c486bb. 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/BRGKL1100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2a14fc3cae3f6fbc992d8bba6564f8e093463968f2ed0e1e84a1d01217a104. 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/BRMK50700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fc00e93353cbefbc8193c7926bc9507a86f88f304b638af2e6a644380bc5f0. 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/BRMK50700006.
Adeus Maria Fulô / La Mulata Chancletera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1055cefc426ab1aeab3fe5fd9cc2b6a30cf8c7cc2eea873a9c13db8da627fa75. 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/BRMK50700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd5ac534dfb93287752203c4381fda7237d970e675b3c92760931f3acea41d5. 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/BRMK50700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e64d98ff9b2e50fdbc0657e84217695ba968cd67442ab8145fbbd9785cff2b. 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/BRMCA0400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5198afc34dfef89dfc696d091c9a665445743c309242cd36c60258e98094f4d. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/BCO132100002.