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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960d5e0be9b50fa74402d8ec3a2423088a7bbb39d5cd889a91bfc73daf057f50. 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/e65aadda-57ba-47ef-bb01-b6000b7949bb.json and https://artists.proofprofile.net/proofs/artist/e65aadda-57ba-47ef-bb01-b6000b7949bb.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27430db1788a9563324cbdf8304102986693a48df6db9c5be04daf967039e4e. 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/BRPUI1500074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa48aeb4d549e2f87270e0afa706d253037d7fe317906a8114c3b737e919807b. 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/BRMCA0000535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b48a0d118aee085706e7f0a1ecff5388776e4a46165d2082f2438ef6707264. 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/BRNIK9900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43f133cbdb8e1e40df7dbbc08dc89756a0887f8180459a39591f7278fdabd29. 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/BRNIK9900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7711b0baf30896b9f819a48b1a0779e16f95de4f00d8691ca44c0f5b49fa19. 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/BRNIK9900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d65fd70b84b7fd3c3dae4de763afbb344af2fb6343d93a49774044e0aaac29e. 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/BRNIK9900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c4dc47fe3163d4078f67ba05c371428817e609df1941ea6b67aa3ca10bcb1b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:37:41Z), 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/BRNIK9900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb543b4c0547dc913070321c63bbce83593417afceaa56c2e7aba689494dd27. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BRNIK9900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185adad1d85d449eaf3f350083edd395ad9ccb40cb4d70489851522d1cee9e99. 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/BRNIK9900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbcfc6a32f46d9e17db7c0202951836a6f0078623387dc5669bd27f4f792bcd. 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/BRNIK9900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894f376becba2ab042287b08688c7252822fe5840c81d4ad689c779399331061. 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/BRNIK9900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9d9fcf1f4416a63453051e9c3f793d393f63a911dff0cb46da96f5764e907c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRNIK9900016.
A Mangueira Não Morreu/ Fala Mangueira/ Salve a Mangueira/ Despedida de Mangueira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5834a811928eac04b87afe5bb520e635c1abc3e2087b03f56933ebd4cd1e5823. 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/BRNIK9900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674458384e5d554e32ed49863381c7a9f3b2350f4067b4f9a7e12be0d11bb172. 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/BREMI0900120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674458384e5d554e32ed49863381c7a9f3b2350f4067b4f9a7e12be0d11bb172. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BREMI0900120.
Como Sera O Ano 2000? / Cabritada Mal Sucedida / Polícia No Morro / Agoniza Mas Nao Morre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe182cfc545493f49a35e3e159b654baf5c8a78d7a0bd539403d7032b33fae80d. 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/BRBMG9701219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115288fd6e1be8b45e0da335eafd5f58157f21dce6f5f3a043c6354bb4c3e9c1. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BRNIK9900010.
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 0x23499cc96d9abaef0a0aa720432722fead4b3b46de76858f22264b42fd27e950. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/BRNIK9900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51659219ccc16e57bb1262b44dd2c0d3c06095bdb527178433caf969b288d3ad. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/BRNIK9900018.