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 0xee3dfa6302cc6b213bbf988d019549947bdb9355bf3b44e82c499f2a002c79fc. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56cfb2c8-1b93-4f17-90a5-3249258a11d7.json and https://artists.proofprofile.net/proofs/artist/56cfb2c8-1b93-4f17-90a5-3249258a11d7.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 0xa3849aff7154408987fc228e369246b52b5d3c8c1c3f90576d2a1e70b20069f7. 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/BX3NV1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295f6ba1ce6f1871c5c2868841087f56e3f8dfa4a87db0210487e27b5fbbb0cd. 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/BX3NV1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bfa8880b1b20152d5cc118d0cab776b3fdce6092c034408edfee23bc116763. 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/BX3NV1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd9c567f3ac9d5a5a3253c136ceedbdd7d998977e6e238bc1288da691807202. 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/BX3NV1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a86d96d4fb3824d221e65bd2646a62bc783c280e4cf0132856e839cd7c9321. 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/BX3NV1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1be941e0f58aeca7712f5dd5b7babc71cc8d404ea55c53319dfd7e0716f61e. 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/BX3NV1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42124c710beca3afd23be21fbb2d35d951222ac5b935d403190cb82059467698. 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/BX3NV1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d4d446a155166e7a171e85a331602ebad5474e72f66e360dd1e075dc9ccb45. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:18:18Z), 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/BX3NV1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5670f54d90d29f755c5b2ab47990774bda8806fb02042d060257cdbb5d36012. 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/BX3NV1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d32a0440362fcd076efaefe77a087a61a1c290fb29107db1e1355cdcd976d38. 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/BX3NV1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb122dc4303d7c1f2a8aa57ed7f2defd3d2240c4ec9584d71632f0f4ebc3be92d. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:02:51Z), 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/BX3NV1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4707b34959d196ae58a6b3f4579dd47197b3e685575f5d0c22d2eac0cbdc72. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:50:46Z), 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/BX3NV1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0c6e37ee9fc6a1fad19d9b7d400189ea69d20e4434ed4152a3d156743c26ca. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:39:37Z), 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/BX3NV2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ac04b927f469b8d4c23f8757b4cb1100c758833c079c4e404bc2bd29064092. 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/BRPOU2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605c5c17c04e024d457ce344bf82e923e80446019ab637b7041298a52ab88aee. 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/BRPOU2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1d57f3d8d0b62d8f029d58ca1380137891c59658665eaa4e7ec06fe2957543. 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/BX3NV1900001.
Adoniran em Partitura: 12 Canções Inéditas