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 0x15f659943f03045a60eaa6d642312bc25d9b011471cad56cd753cd8aaa6c15d0. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc68334f-0507-47cf-8401-f61a44a4e49d.json and https://artists.proofprofile.net/proofs/artist/bc68334f-0507-47cf-8401-f61a44a4e49d.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 0x09e0b23b302285564bd52818f76eddebef03f5e277e6bc0fcdf0b72a7b3726e2. 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/BC4UH2300121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2c70c9bab5878189fd516847beec1be9d8b44c0959fd43cc5766c8c3c9e8ed. 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/BC4UH2200059.
Namorar Não Quero Não X Vou Sair Correndo
A Vida É Muito Curta pra Gente Sofrer de Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf853246682b27988e2f3adb10ec19712ae6180ec7f3e5fa41c72a7a9f917704c. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/BC4UH2300256.
É o Pretão Aqui Que Vai Assumir Seus Filho
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec160505437f5d0f7ea6d0e624ffe248759b81e390d9616e19f184803df17ce. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/BC4UH2300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e5a36264d0e278f0111fb747cf4de042b3791b8b76630008cb69254233f256. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/BC4UH2300135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf834eb46326f2b6635c575d73195565a7f6f2b5a13545f94bc02968c97c095e. 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/US7VG1717415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6b739145cf84e94f00d4a896a2b7af441ca6245f2326225c15df2df3ed8c98. 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/BXPYA1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e4627e50bc8851697328be3db73283dad627a552fb1dfeee4f77c5b217673c. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/BC4UH2200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f6dd96b9ab03a88bad244cdc633b2d4d2de99ec8fa0684a66b4bcdc3398a07. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/US7VG1749553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa179f8737f484ea9cc31ee4b9e1b70c56e0454db78b6660845349a04d8f251. 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/BXG6R1800521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d719dc7236236ee50728ead6466e293fa812214ebf121447b1fe7023a688cb. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/BXKZM1900404.