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 0x75a5a0e5cd52abdc1d24395cfe82b00b929c208683a33f6447c7de4268af1619. 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/e938e2db-1492-498a-992e-c65ba443a2ad.json and https://artists.proofprofile.net/proofs/artist/e938e2db-1492-498a-992e-c65ba443a2ad.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 0xecc19d2bbf6115de429ae3a859061ff7878bf682f7bc7232f5ff83a8fe242fac. 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/BC91N2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75482d946214b539ad9a1fb60ecb875441b30e4be4dd39f1a49eb183aed733eb. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/BRT9E2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2844d661955c8644fd437e226263da30ad7f388e7dac471b06d16dbf1a98926. 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/BC4P82300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bc4529f5c6333d77df7f4701ad62a053c88ee37140d15ea01fa729b1ed69c4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BXWOW2200363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87397c7761b7caab3c25e95b7b1a96d83bfae98479b805a4adfe5a6514b95a7. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/BRT9E2200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501450e91ecf737a206d1e37005aa7efd6045a40aa606567ec30257b10464075. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BRT9E2200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80819f6a4e53f7a7ab2fdcc84ca4bed44a1f96e13da7c94d7f011a5bc919dfc9. 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/BC91N2200010.
Viciado Em Ver Ela Descer (feat. MC Ryan SP)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09ca7481722c8fd567b0c81b987caf3275a484f6b9aa90d06831eba346ffc6f. 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/BK4DA2507519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148c4281ec9a620c4051df0ca72ad6ce8099501380ef86568c018044cd149163. 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/BC4P82400166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65fdb7a1f95f9335d6a908ab2b0e3ae55214291779cda1b569dc5c6acdaea24. 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/BRWMB2500376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5409f821cf7e503f4eef06890d0d09093182e1423804b322bd2f53c5732382. 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/BK4442500133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59160d0c8f7fc05b6e620f0e0dd8b1cdecf5bac9aec6397b36afc5c1a1dbbf23. 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/BC4P82500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab2acc9446b7795291da55d9369d34d04f5573de98609216c04631e6df4cb4a. 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/BX4IU2501683.