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 0xbdef1b1c883f1f4e28c247b3c7a55e66c6d49947ada2a0fd93728cd0ee368ddb. 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/b59f60ce-7ba2-494a-ba07-fd958ea4cae0.json and https://artists.proofprofile.net/proofs/artist/b59f60ce-7ba2-494a-ba07-fd958ea4cae0.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 0x3924c34652279abc2f22c8cf6b92606009b894b1a0889aa766abcf48ae113dcf. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/BR1000900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8121450c7bac2106542408278459248a7dc7e3d0fbd4d2c819ba7b3d6a94a0c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BR1000900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee38e671eef102c4edab6f49d602a734e36ac162631ce8c2b66160ff1ee6932. 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/BRTRB1600259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88f1a9b4069931f9d930813d7ae7cd8b4bf51e83d78d126b290bf3978e5ecb3. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/BR1OO1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebf063944c850d81502804d42dc30fefa503d3e6ee20c1163db32e5013e62e6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BR1OO1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2542b08abfe37b07b1ee4c5c43f75060a06c766161c54b49cdff0d6d75eb83. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/BR1OO1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683ac1e7fc6f8d0844d26b91019ffb2aa07e3c08fa051faafdd9abbfc725e332. 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/BRTRB1600260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144d15756e493cbc360252470be1d6845f665e347eafaa709fd70c1be0b76259. 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/BR1OO1600006.
Sandália de Prata no Estúdio Showlivre (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ae06d1d5f96abea0add4b7004c572a9bff0cc670818ee34ede65ccbcfd0bde. 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/BK26T2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e77fbf31e8ce75529bbc87c3ed6074897fe66a1263b4a64078f55918d4d36c8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BK26T2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bce35cd488437d3e2b4d1b80c6844d7dfc88867027e3ea0d5384878a7bb49c3. 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/BK26T2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514b7b8c1bb8ac30ea97b8057e21ab6aae3d87ddf4c935f9c0511ae1837d699e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BK26T2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ae06d1d5f96abea0add4b7004c572a9bff0cc670818ee34ede65ccbcfd0bde. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BK26T2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf11a90dedd350faa9a3add6e625fc0da9ffff571edd682f8843b3ff1d46501. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/BK26T2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ed77807df7f178fcf08543ca997c1c220d840203aedeb614981b793c81cf13. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/BK26T2400008.