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 0xdb48c34c4d79776f6f42c178fbe30540747bf884254bf2a191626583be50bd31. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/25ed0865-c166-441e-aa92-b773c6f4ada3.json and https://artists.proofprofile.net/proofs/artist/25ed0865-c166-441e-aa92-b773c6f4ada3.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 0x01eac4fd1378bd037d91f70f764954cd14fdd3eb9d7dc19f4b7e32920e8f6317. 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/QZVEM2566467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7754ca98068f4ac5877a0480166c65fe99952d7f0c5f0b894bd53c569376cb5f. 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/QZVEM2599573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60f6a41a121d1a22409a461bd1bb64b450ea66a04e5c978ab4ac0fd2b877710. 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/QZVEM2570945.
SEGUNDA CHATA NO RJ, BEM LONGE DE MAGNATA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100196bf52779d7e5624afe3c718fd836ab85cf14473fb5837cccf5563d84e57. 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/QZVEM2556590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771c8379d47147c091abbe60af87b4f0523132190b1e034f1cdd89706e7dd840. 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/QZVEM2556589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc368f623cd3ec2a8fe7c21dff9f71e663b0dca476049b80a10616f0510e85e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QT4K32501356.
JOGADÃO NA MINHA FAVELA NÓIS ANDA SEMPRE NA RISCA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcb8c9b6cb1595539f1fbca19b042214cdee3f1fc3ea1117c605d67c3948656. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZVEM2599572.
SÓ DE CANTO OBSERVANDO ESSA SALADA X PAGA MIL
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a4316689d68b915a667ef09a481335c26de191ce8fff4f210f6ec132473f66. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZVEM2566090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52de044d7fd5a5832f347889a361f7b9208b903018f5a3817b1a5795cb474294. 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/QZVEM2564332.
CORDÃOZÃO DO DIMI JOIAS MARCOU A BOCHECHA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaee7a2cf04c14debd812711e7d9543603eb259a88cf89bd2a35f761a869b534. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZVEM2564331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a44bc2ee5cf998e5f0f3108faf75a6e8b64006d59930c84665fb60d5d9db36. 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/QZVEM2559736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1c7cb8a07583f90884a6543e44eead2a94ef050c17ef2585cab42ecf1204d0. 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/QZVEM2554443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcc16abc785840fad07c40fcfeda792b10b1833da6af869179002d23d96de61. 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/QZVEM2551641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f902e69eedfa9237c05fb567b2435d0022af27e4856f63eec3ef9253123dc0. 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/QZZ772483472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929394a93c8611878459b92d7f1a035122f6b9cc0a242727178002514db66295. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BKBEM2501167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22adf82137f30c8f0e6022fc84c10c8d316d7753f470993ea09ecd99e329370. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BKBEM2501007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611a7ea398febef28191cdc0693a7c42ecbd84e4045ade146b05fa0c2e6f0617. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BKBEM2501001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d938dc70ed082f09ed37548af236a3f800cec22f7eafd93f5217d7e5ac6022. 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/US3DF2505519.