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 0x4113f2f1b06ee3483ebad5c2771dd53ba4dd0a7991e5d126f799645c6b2633e2. 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/52ca7fea-c0f5-4cd4-8ad2-d9024d109182.json and https://artists.proofprofile.net/proofs/artist/52ca7fea-c0f5-4cd4-8ad2-d9024d109182.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 0xf5a9c48eca61023443a037f71c73c7be54ba68f059c3829d8807b815a1b716c3. 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/BCHFD2400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8245cec01e6b02121e0cbab3a3be68b7bbf11e63c1fef97cffc85908ff718a2b. 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/BCHFD2400124.
Hoje em Dia é Difícil Encontrar (Versão BH)
Hoje em Dia é Difícil Encontrar - Versão BH
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12716ea2268221a2527f93a59cf94872406388ffb781330c42624d75bcc7dff5. 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/BCHFD2400181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89345f6019958f5bac7c33bc32add671eb53ca8757466e2b9db6edf28662b8e9. 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/BCHFD2400223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85c597397ccad4bca410f66c45d2a97dbb0a6105b7a82403cb2c650f4c38e0d. 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/BCHFD2400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeae7e67a0c1ea5fec64b340fe13dabd9b8a78eb013263b9b7da121a303bdbf1. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BCA2A2300383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4e323c4ba287a40da740d1339ab61141d5c5ce6d9028d1a1ca21946bee3ff2. 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/BCHFD2400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94eb04ac9541b8c112fd5fbfcb7a7868f1ea0a0f680b1e39e5196fc1803fa58. 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/BXVK62300022.
Só Sofre de Amor Quem Não Escuta Mc Nahara
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250ad6e567177861188ce8d942270e0446f119e1a7d76c0688d24e061fd5d6c2. 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/BCHFD2300174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469aa0c1b400610391ee07ef86994cea05719cb1c6891151713bb3dbd2e29e40. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BCHFD2300173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd283e50fa53976909f006b0b4e6eb041c8ef32cccddb9f9a604b14bb49f3eb1. 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/BCHFD2300178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba0aa0263846ca5219099507e7f5cb18a8a774b825fdfcaddef8d25867d0578. 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/BCHFD2300183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250ad6e567177861188ce8d942270e0446f119e1a7d76c0688d24e061fd5d6c2. 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/BCHFD2300174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469aa0c1b400610391ee07ef86994cea05719cb1c6891151713bb3dbd2e29e40. 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/BCHFD2300173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c916f7fda4249d1b65d328c5b7675d6555180bad2c466aa694627d4d2f033e. 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/BCHFD2400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63e20d57c23f32c93b4041094a9cc7f3674102115715a8c62c1eb886ab8d7b8. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/BCHFD2400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd95421561963815235b099754a9eecb020e8ddf0213ba4becfecc09ca772f7. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/BCHFD2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b557fcd6b9def3d44d1db8993049ce3b66e7fb7f3f1b885de03fe03faec37a. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/BCHFD2400040.