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 0xb115dbbd00be768d2ee3b77527cbbefb602a77431c27841c6ded14c0b485b493. 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/031594a5-3bda-43bc-859d-f499283b7902.json and https://artists.proofprofile.net/proofs/artist/031594a5-3bda-43bc-859d-f499283b7902.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 0xdbac515e1a55d5487d4593c57473b9e59df11a5619bb20d760e3fb6912147a85. 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/BRBMG8200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b85a2105162cd34fd0f8e7ef55a771244f6bb34e0c48d2414d8f29a97a30ed7. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/BREMI8400744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaac86303d98b0eed492fd6510f05db930830026816e06ac7e8051c16e2a919e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BREMI8600415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bb7cd28ad707d757dd9c7d6155d4ff88b09bd37a19a6c9118b0f067692e96e. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/BRBMG8200543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4198de86620d354d8421ad2188cd7ce8a93752f5f68b2758efc0dcb5e5b6a6. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USKO11001434.
Intimidade Entre Estranhos (Trilha Sonora Original)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa482cac98ff0221386eeebbc6eb4d9f9cf9b234de044433e19b4eb0e6c9b6cd8. 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/BC91N2500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e50b252f135eb103003b70fb8ecb7f119b3b373dee031ffe2ea701af7831556. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:42:30Z), 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/BC91N2500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6232ed7e4d06edcf145eb33f9b29dd34c69331498f008ce8ef8f66908c65b1a0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BC91N2500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf652e0b9e321f20dd15d8068001dee2c57b21a94e6bdd78f7f02f02e7c261729. 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/ESA092400764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c43ea34ebe14337fd6660362fca3efb4d46c5087c3c7eb9677ee1f6ecbae5e. 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/BXSVC1600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf652e0b9e321f20dd15d8068001dee2c57b21a94e6bdd78f7f02f02e7c261729. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ESA092400764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58ba55a542a40121ad4e0327b1be76c09ba4acf9368efa34cba950930c72d6c. 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/ITC491300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460f8977f9f372c7549b882050fcde61261e90b38cde6c6b0361ce8a307d3eb3. 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/ITC491300118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf749c154bb25bd040d998e3f9cbd4c84706b92c73a30fb5f0cefe365aed0152. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITC491300117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc4ba7c2f7ef26e2f1cd21c534a648e1757b16c9005b7d42ff36196370b3e31. 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/BREMI8400065.
DJ MEME Apresenta Clássicos Reboot (Volume 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813d7844ab444e6e3b0a4125fc10fde5b9ebdfe63f7863ba19511226a57a4e6c. 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/BRUM72003424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6fc171d9902f169da795d34143359dc21749132d599aec6b56de5f84a814ad. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZH5R2000096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9041fc5823438f9f8924f7f7bfe519934891da8c24020cf78dec00d6f54eb7ee. 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/GBYG52060002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056a21e4468a2229f1564e1726bf8d1256f0cea739df839b6dc58656f5fe4c0c. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BRBMG8700339.
Hidden Waters: Strange and Sublime Sounds of Rio de Janeiro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa784d44718931bff56dfe78659b20247011a56a50f598999cb53cd987d055761. 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/GBCLQ2200729.
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 0x692727de8feab9c4b71a74f7741ce9b04c7f1d9b9ffef2048a57211004bb9bd4. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/IT0361200067.